well we did a little measuring on the inlet and it seems as though this one only has a 2 1/2(maybe 3/4) inlet when my other a 3 inch...i am going to call turbonetics and speak w/ a tech just to get some info on a turbo that i am thinking of buying...:P ...i wonder how i can have a bigger compressor wheel but a smaller inlet??? odd...i guess i'll call them on monday to see whats up..hopefully i can get some useful info out of it