Get yourself a MSD ignition box with rev control.(the factory rev limiter shuts off fuel to the injectors at a given rpm,which is not good in a blown application)
Know your fuel pressure,install a fuel pressure gauge.
Get at least 30# injectors,these will support what you have just fine.
Upgrade your mass-air meter,as the factory meter is very restrictive.This allows supercharger to work more effeciently.Also upgrade your exhaust system as your shoving in alot more air,so you want it to be able to exit easy as well.
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Paxton Blown 87GT
Mustang..it's not just a car,it's an attitude