i'd have to say.. to keep it NA. i'd go for a smallport 100kw motor.. you get the good bottom end.. bigger big ends, oil squirters etc.. better head design (compared to the bigport).. and you can buy one like i did for $200 with a blown head gasket, and build it from the bottom up.. you know what exactly is going in there.. and your not going to run into the rwd 20v conversion hassles.. yes they are easier now because people make the parts to save time/money..
but my smallport runs door to door with most 20v's and it sounds better
next step is cams.. as it sits, i only got 2 runs in down the quater just so i could gauge how quick it was compared to stock.. or even 20v's etc.. and my 2nd pass was 15.51.. first pass was a gay 15.8.. but i think i might have gone a fraction quicker if i had another one..
