I haven't been on here long either, (only had the MSP for couple of months) but I've been building cars for the last 10 years (Nissan's mostly) and I've never been on a forum that came up with it's own term for an engine failure because it happened so often!!! That being said, if this is your DD and only car, I would keep the plans in the mid 200hp range. When you've driven a FWD car with 250whp and a limited slip, you'll see that more HP doesn't gain you ANYTHING on a street driven car. The more power you make over that, the more it either torque steers, or just lights up the tires. If you're going to be road racing or dragging it, then I could see the worth in tearing the motor apart and forging it, but other than that, just enjoy the car and the AWESOME handling that Mazda blessed it with.