Chris;

x2 on the Kroil or a 50/50 mix of acetone & ATF. For the alternator bracket there are folks that sell well engineered pieces for not so crazy $$$. See these for example:

https://www.welderseries.com/blog/online-store/alternator-mount-kits/

http://www.waldenspeedshop.com/jitney.html

SimS