i swapped on my d15b1 the dpfi to mpfi,went to a d15b7 cam,and this weekend im swapping from 4 to 5 speed.the mpfi swap i noticed little difference,but,when i swapped the cam,now the car kicks really hard.hopefully when i swap the tranny i can feel the power cause the 4 speed tranny sucks with the gear ratios.ive been reading a bit on the tranny so maybe there will be a bigger difference.