I am surprised nobody has brought up the fact of porting a set of 96-98 non-PI heads. The PI swap gained a ton of popularity because out of the box it adds decent power, but 30% of the gain comes from the PI cams. When you start talking about porting, you can get the 96-98 heads to flow better then a set of ported PI's. Then throw in a set of PI cams and you have at least as much or more power for less money.
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'97 T-bird LX 4.6L 2V, auto
SVO heads/intake, Vortech T-trim, front mounted intercooler, blower cams, Cobra crank, Manley H-beam rods, JE pistons, Aeromotive fuel system w/ 42# injectors, and much more
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