350 rwhp with 10 psi intercooled boost? That's possible considering your other mods. But instead of porting the heads I would seriously consider replacing the rods and pistons. They aren't the strongest in the world. May save you an expensive repair sometime later.
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'97 Cobra, K&N, Flowmaster, subframes, 4.10 gears, Steeda Tri-Ax shifter, Steeda G-Trac 3, Cobra R wheels w/ Goodyear F1s
My Ride