I've just acquired a '73 Chevy LWB with a 307 and the full compliment of smog junk. I live in an area of my state that does not require pollution or other inspection. The performance of this motor really stinks - poor hesitation, no acceleration, rough idle (yes, I've checked the timing and other "tune-up' stuff). Can I just remove the air pump, hoses and pipes from the manifolds? What changes in performance can I expect if I do that?