wheres all the FAST smallblock mopar heads up cars??

don't get me wrong, id rather have a smallblock because they are so much easier than a tractor size motor bigblock, all big and goofy...but I just don't see it?? Meanwhile small block chevy and ford are right there....Again must be the R&D going into the more popular engines. Meanwhile im trying to race in a a heads up class (Ultra street) with a 30year old dinasour cyl head big block...LOL.

I don't know anything about boost, but its a lot easier to get 600hp nitrous through a 540 or bigger engine than through a 440 (smallblock)