You wont be able to convert a hobby stock to a penn / Ohio series car .
Stock height is way higher than the penn cars .. The roll cage is moved back as far as possible ... the shock mounts are different etc. etc.
sure you can put a bigger motor in your hobby stock and some bigger tires to race for 20th back maybe .
build the 4 banger and run the young guns class or gokarts and see if the kid really wants to dedicate to racing .... then if they do .. get a base package
from one of the Sportsman builders and build the rest on top yourself and then you will have a car that has a chance !
Then Penn/ Ohio is the best thing to happen to dirt track racing in general ! the only thing that would be better for racing is the Federal Flat tax and Trump to fire about 50 million Federal Employees and close 90% of the departments in Washington!
For CHRIST SAKE! the EPA wants to ban converting cars to racecars!