Fixed the tailpipe rub, but the muffler still keeps hitting the floor pan. Will fix that when exhaust is done.

Idle is a tiny bit rough, not stock smooth, which is odd because other then the exhaust it is a stock engine. Starts cold no problem. And occasional stutter at times, with no consistency to it.

I'm wondering if even in its stock configuration, I shouldn't get some new springs for the HEI centrifugal advance and tune it to bring the advance in sooner?