To everyone I will set it straight I'm the owner of the 15l car driven by Witherite we actually have 3 motors 1 a Ford steel block and 2 aluminum blocks 1 is a Cornett other is a Malcuit we changed motors Saturday morning yes to come race at the bird anyone of yous can come look under hood and come to my shop and I show u cuz it still a mess from changing motors and as for Charlie running an aluminum block at the bird he is NOT I have seen what it is have a nice day don't hate on him just cuz he wins races it's what we all do it for to win