Hard Starting Hot Big Block

Tried another starter (joys of hoarding parts!). I believe this was an OLD Mopar performance starter. It has offset wire hookup from the factory. I'm seeing a drop on my display to about 8v (happens so fast it's hard to see) on the first crank but it's turning over wayyyy better than it did with the MSD starter. Makes me wonder if the MSD was bad or maybe the aftermarket terminal relocations. Ether way I'm going to keep on testing with this starter as it will crank about 2-3 times even when hot and start up.