Iowa Chapter Director
Join Date: Jul 2002
Location: Ames, Iowa
why downgrade to single-port heads unless they're machined for larger valves? The split-port heads have a larger intake valve, at 1.9" diameter. Thats larger than my big valve heads at 1.84" If it were me, I'd look for other ways of power adding, such as a turbo setup. You could find a used t3 at a junkyard.
Yeah it has DIS, but you'd need to use a supercoupe computer anyways, so that's kind of null and void to the situation.
1988 Notch Mustang: - 438W, direct port n2o, t56
2003 SVT Focus: - SCT X3 tuner