im considering buying an upper and lower intake combo for my pretty much stock 94 GT. considering that i still have stock everything except for pulleys, cai, o/r h, mac flowpaths, platinum plugs, taylor wires, and 12* timing, and i already have problems with detonation while running any less than 93 octane, will it be necessary or recommended to upgrade my fuel system such as the pump, larger injectors, maf, t/b, any custom tune, or adjustable fuel press. regulator? or anything else to get my car to idle good, not have detonation under a load and/or at high RPM's, or in general just to run "right"... are there any one of these things that in stock form on my car now would be seriously restricting the effectiveness of the intake?... also i'm considering a GT-40 or cobra intake, which intake holds low end torque better?... a lot of questions for sure but feel free to take a stab at any one or all of them, thanks, Kyle