I picked up my P's from Bill Klein, real great guy to work with. I got them for $525 assmebled with stainless valves and Comp Cams hardware and they were milled .030 also. Check out my sig for the rest of my combo. I really like it, but haven't really gotten a chance to run it (bad weather). I think the 70mm tb and Pro-M 77 would be overkill. I have seen the Pro-M 75 bullet for sale for $169 at Muscle Motors. The Cobra intake ought to be fine too.
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1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now...