I've a 84 Z28 all is completely new rebuilt engine, 700r4 auto after market carb, intake cam lifters ignition system, factory air, cruise. The ecm harness and box is on the passenger side and the harness snakes thru the inner fender well and into the engine compt. can all of this be taken out without any effect on the rest of the cars systems, like the dash, a.c. or cruise etc. Also the exhaust is catless if it matters. If I can do this whats the best way or easyiest way? Appreciate.