Funny you should mention that , I just put the Optima yellow top that was in my car into my tractor because it needed a battery . So yes an Antigavity battery will be in when I get the new motor & trans back .
If you are worried about piston skirt wear , have your pistons coated with Swain Tech PC-9 . I had mine done along with the domes coated with TCB , ceramic thermal barrier.
https://swaintech.com/race-coatings/race-coating-descriptions/piston-domes/...
I have them on my car and yes I had the squealing also . I started with the BP20 pads ( which are used for higher speed braking with less fade ) and they squealed at slow speed , as in just coming to a stop / parking . I switched to the BP10's which is the standard pad with the kit and it still...
On page 3 of the assembly instructions for Wilwood front brakes is the diagram of what needs to be modified for their bracket to fit . If Baer brakes use the same holes and thread size you should be ok .
www.wilwood.com/PDF/DataSheets/ds946.pdf