Has anyone blown up their 4.6L 2 valve combo while running 8psi? If so what was the cause of the failure? Reason I’m asking is I’m wanting to get a 99-04 and run 8 lbs. until I can afford a forged bottom end. But this engine will most likely be a high mileage engine like over 80,000 miles. If it passes a cylinder leakdown test and compression test, it should be ok to handle the power as long as I don’t over rev the engine correct? Combo will be pretty simple to start with, basically a stock GT w/ procharger (Intercooled), injectors, Kenne Bell Boost - A – Pump, 4R70W, and a custom (Conservative) tune on a dyno. Not to be revved past 6k rpm. I know the stock Trans may not hold up but that’s cheaper and easier to replace / rebuild than a motor. So with that much mileage should I be concerned about the engine having 8psi and around 360 rwhp? Assuming it passes the cylinder leakdown and compression tests?