Why are there so few blown small blocks?

I think most people who want a blower on their mopar go the big block route.
Plus you need a nice block and strong bottom end. The best way to go is with a race block which is not cheap. Parts for my set up were difficult to find and or had to be custom made.

I have a stroked small block with w2 heads and a 671 blower with a R3 block. It was not cheap to put together. I think a bb set up may not have been much more in retrospect.