double?? it gets like low 20's mpg as it is now. and i have a job! i just have no money because i have...expenses. and i just replaced my transmission. tell me more of this...loping cam. is that all i need for that "crappy" sound? that wont affect anything else? what are some good ones? how much do they cost? oh and do you know if i can fit cat back dual exhaust under there? theres a torsion bar thing going across the middle of the car that looks like it could be in the way.