Challenging challenger

The vacuum advance not being hooked up could be because the car has a large cam in it and sometimes people don't use them with big cams. The kickdown could be because the trans is a full manual style. You don't use kickdown for that. If it's not a full manual style, you will burn up the trans.
You need more info on this car, so you know what to do.
Thanks for the Intel. I've never really explored building engines, and modifying from stock much.

I got his car running and did my part. I have enough on my hands getting my swinger project tuned in. At least he can drive again