Just moved from Central California to 6000 ft Colorado. Mustang ran fine onto the trailer but would hardly run coming off the trailer in Colorado. I know that re-jetting the carb will be needed. Any other simple fixes to help it run? It is a stock C code 1967 coupe. Still has original two bbl with auto and factory air and all California smog equipment is still in place. Would like to keep as original as possible. Any place to buy a rebuilt two bbl for high altitude?Thanks