Okay, here's the story. I have a 93 GT. My car has blown 2 brand new heads in the last 4 months. This all started when I decided to give my stock fox body just a little more power. So, I bought new heads, headers, intake, throttle body, camshaft, rockers & push rods, torque converter, pulleys, gears, etc. (and the list can go on and on). The first head went within 15 minutes of the car being started once it was re-assembled. Luckily, the vendor I bought it from exchanged it for a new one. Now, 3 months later, the second head is blown. What could possibly be wrong?