If I considered the 427 Industrial would it make sense to eliminate the Brownie 3sp auxilary?
Also I have either the 11,000 or 15,000 lb full floating single speed rear end Chev made. Not sure how to identify which one.
I sure wouldn't eliminate it. It's nice to have the extra gears anytime you would need some. You don't have to use them all, just use what you would like to.
I would say that you have the 15 Rears, but what is the GVW on the truck? Also look for the label on the glove box door for axel info.
Bill