Stock mopar starter. 600 cranking amp battery. Cam likes 20 degrees initial timing. I'd never run manifold vacunm. The ignition system was designed for ported vac to advance. For 35 years i've allways given as much initial as it would take with out a hard hot start. Most people will stick with 38 or 39 total. Car starts great and runs super. Not messing with what allways worked for me. Initial will change depending on cam used. My GTX runs the big Luniti Voodoo cam 513/533 and likes 21 initial 38 total. A stock cam won't like that much initial timing.