remember a top swap is a 100% intake mod, it will only give you great gains (like into the 13's) with a decent set of supporting mods......
Very true. That's why I did the LIM, SC, and TB porting first. That, combined with 1.9 rockers, and already having a plog and 2.5" DP, I'm hoping for good things.
2004 Impala LS - got some mods sold!!!
2009 Subaru Impreza WRX STI
NAIOA moderator Still Imp'n, just in a different Imp.