What heads are on it now? the 063's are good heads, they are small chamber (about 101cc) so they might boost your compression ratio, depending on what's on there now. The cam is OK, mid range...what are you doing with the car?? Strictly street? The single plane intake is cool looking, but it will kill a little of your low end torque, but will give you a little more power up at the higher end. If you drive it on the street all the time, that's not where you will want it. Give me more info on the heads (stock or modified at all, ported, stock valves, etc) and I'll run a simulation on it for you. Also, do you know what head gasket?? (steel shim or a composite gasket?) What diameter headers? John