Front runners, back spacing.

What do you folks think about playing with the brake bias to put a little more in the rear?

With having so much more tire on the back would that make sense or is that just dumb?

With a bigger tire in back AND if you’re still running drums in back, you need at the minimum a proportioning valve. An adjustable proportioning valve would be even better. If you get and adjustable, take her to a dirt road and start applying the brakes. Adjust it until you start getting even pressure/locking up of the brakes.