so im going to go to the junkyard here soon and get some gt40 heads. my car is a great running one, 114k on the clock, dosent miss a beat, but leaks. the oil pan gasket is pushing out, rear main leaking (obviously) valve covers, ect. so the idea is to pull the motor, tear it down to a short block, spray bomb the bay, and start re assembling it slowly with all new gaskets, a mild (cheap) hci (since my goal for the car is to open track/auto x) im going to buy headers anyways, so i may as well spend the extra 40 bucks on frpp p headers, so i figure i may as well do p heads. ill grab the upper and lower intake and tbody while im in there too. i already have a 76 mil C&L and inlet tube the plan is a tfs1 cam probably so ill probably grab a tfs valve spring kit, get em milled and have the valve springs put in.ill probably also just gut my smog pump and block off all the passages for that. (visual inspection isnt too stiff here in va) ill probably keep the egr stuff if i can now my questions everyone says explorer, but mountaineer works fine too right? i know some late build 97s have them, and all of 98, but some say there are 99 and 00 p heads that are even better than the late 97-98 ones ? true? i know how to check the bars on the front and see if they are p's or not too also what is the consensus on what the best upper/lower intake combo is? any particular year explorer/mountaneer? what do i need to know about the internal egr system?