I joined yesterday after reading the 3.4 to 3500 head and plenum swap. I have a 94 Firebird if you have not allready guessed. Actually it is my wifes car mine is a bit newer a bit meaner compared to her car that is. Anyway my son and I recently under took the monumental task of restoring the car to it orginal glory if there ever was one, I really look forward to the info you fine people provide on this site to be of great help along the road to recovery for the 94 T-Top bird.