Originally Posted by
NI_racing
^ lol not so much....
interesting will be my 12a/13b s4/s5 na/t built shortblock that will demolish healthy lsx engines
so, i was talking to the guys who had the n/a 1st gen running 12.8 seconds and they said the 12a irons didn't didn't really match up with the 13b housings. so they used t2 irons.