I have a little to spend and want to get the best performance with the money I have. I already have the mods in my signature and am thinking about a set of underdrive pulleys, Pacesetter headers, a cam (Comp recommended 54-412-11), and the retune for them.

What kind of gain would you expect from that? Might be better off ditching the pulleys and swapping my 3.42s for some 3.73s (I like to cruise ~95mph and don't want 4.10s). What would you guys do?