Well you guys have been very helpful so far in my modding adventure haha so i figured i'd go ahead and get a little more advice before i order a set of cams. Right now i'm torn between the Comp cams Thumper Set and the Ford Racing Hot Rod set. Are there anyone using either of these that could give their input on the pros and cons of either? Thy will be mated up on my 05 Gt with a Pypes O/R X pipe, Flowmaster Catback, Steeda Underdrive Pullies, JLT intake, Sct programmer, and 4.10 Gears. I'm trying to reuse my factory springs and retainers to help ease the install but still get as much of a choppy idle as possible as well as the best in Horsepower gains. Any help will be appreciated, thanks