Yea that was like 12 years ago. Back then the PI engine was kinda where the Coyote engine is now as far as being new and relatively unknown. I mean, back then, shops all thought cam swaps were all but impossible and would give you no gains. A lot has changed since then as far as tuning and what we can do with these engines. See, back then, the oldest PI engines were only 4 years old. And there were not many PI swapped engines out there. And even supercharged New Edge GTs were not that common. I mean, they're talking about LT1 Camaros in comparison to compression ratio, lol!! And the main guy campaigning against it was even saying the stock compression is too much. Back then he may have been right. But how many of us are running stock compression and DDing our cars with 8, 10, even 12 psi? And how many Cobras are seeing the same boost levels at 9.85:1? And how many Mach 1s are out there with blowers on stock internals at 10 psi?
If you do a PI swap, and you use a centri blower which builds boost gradually, and you do a moderate tune, then I think you will be fine. Go with some ARP head studs, make sure that engine is built correctly using the correct torque specs and sequence, throw some headers on it while you're at it, run the 3.60 pulley (if using
Vortech) for starters, and tune it mildly. If you want extra assurance, throw in a CX Racing intercooler set-up which goes for like $500 shipped on Ebay or a meth injection kit. But even if you keep it non-intercooled, as long as the tune is safe and mild and you're not going WOT and staying in it all day every day then I really don't see you having any problems. Your tuner should be able to keep your AFRs in the proper range. And from there just use high octane gas and throw a can of octane boost in it every now and then and I think it'll be ok. Other things you'll wanna do is run a good aftermarket fuel pump and some 60lb injectors. And if you're really worried about the compression, then run a thicker head gasket which should help out a bit.