Interesting, losing some low end torque with the catback. I have a magnaflow and it doesn't seem to hurt anything. Any articles on this, I might go back to stock if this is the case, but I really like the sound of the magnaflow.
As for more power, I was thinking of going carbon fiber with the hood and fenders to lose weight then possibly pulling out my v6 and going to the 4cyl 200hp Euro Vtec engine with the five speed manual for more speed. I saw a couple on ebay.
I looked and looked at alternatives and boosting causes damage to the engine if it is not built up for the stress. Trannies I hear are especially weak and prone to failure.