Nice to be coming outta the funk

Sucks to hear that you basically were asked to leave-some people just can't be pleased I guess. Anyway, with that 83-85 intake, I used to have one on my car, and it ran fine even with the stock D80E heads-and those are junk. The 40P heads will run fantastic. Just like Tim said, that intake will provide plenty of velocity-it's basically an aluminum copy of the old A code 289 4bbl intake...plus the EGR nonsense which you can block off should you desire (I did on mine)

If you were to open up the ports to match the runners, it likely wouldn't have any low end impact-and that cam you spec'd with Oregon should work out pretty well...with those numbers, you should have a very mild lope and probably pull pretty damn well up to about 5700. And with a T5 and some 3.40 gears-ought to be PLENTY peppy.