Alternator for my drag car

I still run a 35.00 piece of Chevy junk on mine that I picked up off a table at Norwalk. I did buy a nice pretty small one off Egag and even paid a little more for the higher output one. When I had it tested at my local alternator starter rebuild shop he told me the guy lied. The pile of crud seller on Egag tried to buy my silence but that didn’t work out well for him.