65 170 vacuum advance or not?

He's from a pretty well known racing family in the area so he's pretty good. He told me about that OSAC valve system and that's why he unhooked it. He said they never worked very well even when the cars were new. I had the osac and the vacuum bypass valve hooked up just like the factory service manual. Mine's a 400-4bbl so there is no egr plus I don't even have the factory intake on. It's a Weiand Action Plus with an Edelbrock 600. He set the timing and adjusted the carb. It made a world of difference and with that hose unplugged to the vacuum advance it actually would smoke the tires from a standstill. Before it would stall out. I just don't know if this Charger could be repaired enough to make driveable any time I want. But this Valiant is pretty simple and I feel even with the unknown miles on the Valiant that it seems already more reliable running than this Charger which has had everything gone through.