98 GT, manual trans, 3.27 rear. I bought a set of Cobra brakes and snagged the 3.73 geared rear axle with it. Engine mods right now are BBK CAI, performance coils and wires, Flowmaster muffs. Phase I of the build will add PI heads and intake, larger throttle body and plenum. However, Phase II will be a mild turbo or blower setup. Should I keep the 3.27s in there knowing the power adder is in the future, or just go with the 3.73 rear?