I have replaced my hpop since I went to the track but I was running 16.16 so as fast as I pulled away he may have some issues. He was most definantly stock but I thouhgt he would give me a good run. I have 4inch exhaust fpr shim intake and the dp. I usualy just race on the 80 because the 17 degree pump I put in still doesn't give enough for the 120. I am faster on top end with the 80 tune.