Need help with 73 duster's Starter

I have a 1973 Plymouth duster 340 that was recently swapped to a 318 with a set of hooker headers. There is no other exhaust on at the moment. Never worked with exhaust before and I need the best way to remove the driver side headers to get to the starter for replacementView attachment 1715579766 View attachment 1715579769 View attachment 1715579766 View attachment 1715579769
At the very worst you should have to loosen I had her at the had and maybe at The collector but you shouldn't have to take it completely off.
My highest recommendation is to go to the Pick-n-Pull and get a starter off of a mid-90s truck...