yep what is racing to you. street. strip . hill n hole . mud pit . sand drags what ? what is your budget ? not much. some. or not much ?its not very hard to see what your can put in one open a jegs blook start adding up the list. what are you looking for big engine past 565 cid ? max is about 582cid with a 4.375 crank in 9.800 a big m block short deck.. tall deck 10.200 .572.598. 638. after market blocks . will need good heads the bigger CID you go . stock gm 454 block 9.800 . 489 to 510. gm tall deck 520to 540 is about it