Sure the 904 option is available for a big block.... just like my buddy's stocker wagon with a Pro Flight
(not cheap... not even close to cheap).
I didn't think that the engine might be a big block till after I posted. Then had to edit it just in case. But a cheaper alternative to a ProFlight (custom 904 guts in a 727 case for those who don't know) would be a JW Ultrabell to mate the 904 to the big block. The 904 would just need to be built well, not with all the custom & billet parts.
I know that this is not apples to apples but I started out with a low gear set in my car origionally and it was suggested to me to put a stock gear set in, glad I did car picked up almost 2 tenths in my 60 foot, my combo just did not like the low gear.
