Rob With your new 300 bhp motor or was that a secret i would think a 20 front and a 100 back Or maybe what ever you have on the front and a 50 rear think brands was the only circuit i didn't hit the limiter on last year.
I ran a 50 at Mallory the other week and it was ok so I would think the same would do for Brands. Also ran a 50 on the CS last year and that was good too