no. if you go the 6.0 route and want to add a chip/programmer ect seems like 60ish hp gains are the limit for the stock head bolts. 7.3 of which I own 3 a 99 sc srw stick 2000 cc dually auto and a 2000 excursion, the thing I like about the 7.3 is it doesn't have all the polution crap! for as...