shit man i dnt know half of uall but my homie here in town runs a 13.6 on a 95 gsr 4dr with stgock fuking pisotns and rods and has 153,XXX miles on it and a 13.6 and we r no where nearf sea level..... i would have kept tha gsr with the gsr and squezzed or juiced it... that is just my opionion..... fyi it is alot harder to run quicker times when u r not at sea level.... if n e of my boys over here went down there we would b pulling sick fuking times..... but thats my 2 cents...