Different tracks I know,,, but I tried to find a few old Pittsburgher 100 weekends within the last 10 years to compare to Sportsman cars of today. Keep in mind these are WoO lates, not a weekly show. Both slick daytime qualifying. In short the fastest Sportman today would have been a mid pack WoO qualifying car that year. Not bad. So I would have to assume the answer is yes, the Sportsman of today would be as fast,if not faster, then the LM of the 70's and 80's.
2007 Pittsburgher 100
1. 44-Clint Smith/Senoia, GA 20.320
2. 75-Bart Hartman/Zanesville, OH 20.381
3. 1-Josh Richards/Shinnston, WV 20.432
4. 29-Darrell Lanigan/Union, KY 20.449
5. 1*-Chub Frank/Bear Lake, PA 20.563
6. 15b-Brian Birkhofer/Muscatine, IA 20.717
7. 15-Steve Francis/Ashland, KY 20.750
8. 19-Steve Casebolt/Richmond, IN 20.795
9. 3s-Brian Shirley/Chatham, IL 20.874
10. 79-Davey Johnson/Latrobe, PA 20.884
11. 24-Jeremy Miller/Gettysburg, PA 20.913
12. 11-Tim Hitt/Weston, WV 20.948
13. H1-Jared Miley/South Park, PA 20.995
14. 24-Rick Eckert/York, PA 21.029
15. 4b-Jackie Boggs/Grayson, KY 21.029
16. 1c-Lynn Geisler/Cranberry Twp., PA 21.032
17. 1d-Ronnie DeHaven Jr./Winchester, VA 21.124
18. 25-Shane Clanton/Locust Grove, GA 21.128
19. 99B-Rick Briggs/Bear Lake, PA 21.150
20. 22-Gregg Satterlee/Rochester Mills, PA 21.183
21. 02-Al Atallah/Bridgeville, PA 21.192
22. 84-Rod Sweitzer/Stoystown, PA 21.233
23. 17-Keith Barbara/South Park, PA 21.244
24. 99-Donnie Moran/Dresden, OH 21.282
25. 40-Dutch Davies/Warren, PA 21.320
26. 0-Steve Baker/Fairmont, WV 21.351
27. 2J-Jeff Rine/Danville, PA 21.362
28. 1U-Matt Urban/North East, PA 21.400
29. 20-Chad Ruhlman/Bemis Point, NY 21.432
30. 68-Dennis Niederritter/McDonald, PA 21.480
31. 21d-Dan Stone/Thompson, PA 21.535
32. 76-Dave Wade/Clinton, PA 21.628
33. 21-Leo Stadelman/Jefferson Hills, PA 21.628
34. 17d-Nick Dickson/Lewistown, PA 21.878
35. 2J-Mike Johnson/Imperial, PA 21.894
36. 17-Larry Marks/Pittsburgh, PA 21.948
37. 33-Chris Hackett/Erie, PA 22.057
38. 17-Brandon Burgoon/McDonald, PA 22.070
39. 6-Jim Lepro/Midway, PA 22.150
40. 7M-Michael Davis/Rayland, OH 22.401
41. 13-Steve Wilmoth/Clarksburg, WV 22.593
42. 81-D.J. Miller/Hookstown, PA 22.750
43. 1-Kyle Lukon/Burgettstown, PA 23.032
44. 93-Roy Mitchell/Hobart, IN 23.932
2014 Ed Laboon Memorial
1 16m Rusty Martz 21.344 3 105.416 mi/h 3
2 66 Timothy Burns 21.456 2 104.866 mi/h 00.112 00.112 3
3 21W Chris Withers 21.598 2 104.176 mi/h 00.254 00.142 3
4 1R Rod Laskey 21.619 3 104.075 mi/h 00.275 00.021 3
5 M5 Christian Schneider 21.779 2 103.311 mi/h 00.435 00.160 3
6 419 Shane Applebee 21.787 3 103.273 mi/h 00.443 00.008 3
7 224 Shawn Fawcett 21.796 3 103.23 mi/h 00.452 00.009 3
8 C8 William Hurlbrink 21.909 3 102.698 mi/h 00.565 00.113 3
9 20J Jim Fonaught 21.963 2 102.445 mi/h 00.619 00.054 3
10 17m Russell Moore 22.014 3 102.208 mi/h 00.670 00.051 3
11 25 Brett McDonald 22.017 3 102.194 mi/h 00.673 00.003 4
12 T3 Colton Gearhart 22.030 2 102.133 mi/h 00.686 00.013 3
13 64 Rob Shook 22.038 2 102.096 mi/h 00.694 00.008 3
14 380 Pat Hanley 22.071 2 101.944 mi/h 00.727 00.033 3
15 44S Bob Sloss 22.091 7 101.851 mi/h 00.747 00.020 8
16 68 Shaun Hooks 22.099 3 101.815 mi/h 00.755 00.008 3
17 92H Bobby Heim 22.137 3 101.64 mi/h 00.793 00.038 3
18 29 Curt Bish 22.144 2 101.608 mi/h 00.800 00.007 3
19 08 Jeff Broniszewski 22.207 2 101.319 mi/h 00.863 00.063 3
20 28S Bob Schwartmiller 22.224 2 101.242 mi/h 00.880 00.017 3
21 1B Bill Robertson 22.397 2 100.46 mi/h 01.053 00.173 4
22 45JR Todd Weldon 22.442 3 100.258 mi/h 01.098 00.045 3
23 30 Bob Egley 22.472 3 100.125 mi/h 01.128 00.030 3
24 68X Jake Simmons 22.530 2 99.867 mi/h 01.186 00.058 3
25 T31 Tom Scott 22.557 3 99.747 mi/h 01.213 00.027 3
26 2w Leigh Wheeler 22.568 3 99.699 mi/h 01.224 00.011 3
27 10 Nick Kocuba 22.705 2 99.097 mi/h 01.361 00.137 3
28 60B Jim Ball 22.730 2 98.988 mi/h 01.386 00.025 3
29 33K Brad Koteles 22.826 3 98.572 mi/h 01.482 00.096 3
30 96 Jim Sayler 22.840 2 98.511 mi/h 01.496 00.014 3
31 7 Eric Piotrowski 23.190 3 97.025 mi/h 01.846 00.350 4
32 5S Randy Sprouse 23.353 3 96.347 mi/h 02.009 00.163 3
33 17L Vince Laboon 23.427 3 96.043 mi/h 02.083 00.074 3
34 4 Ricky Steigerwald 23.432 2 96.023 mi/h 02.088 00.005 3
35 27W Steve Webb 23.445 2 95.969 mi/h 02.101 00.013 3
36 1S Kyle Shannon 23.554 2 95.525 mi/h 02.210 00.109 2
37 A22 Bill Slade 23.606 2 95.315 mi/h 02.262 00.052 3
38 22B Jesse Brock 23.673 3 95.045 mi/h 02.329 00.067 3
39 7p Mark Peck Jr. 24.951 2 90.177 mi/h 03.607 01.278 3
40 W1 Jarrod Westover 26.524