8 3/4 Price? Sure Grip Unit Price?

Hey guys. I have a stock small bolt pattern 8.75 rear end. It is in great shape and semi complete. It is complete minus a center section. Drums are great, brake hardware is newer along with shoes. It has factory vent and hose. I have the 2 sets of axles that would go with it. The housing, backing plates, and drums are painted in Por 15.
I am switching to a Dana due to racing with a 4 speed. What is some th thing like this worth?

Also, I have a cone style suregrip unit in great shape. What would that be worth unit be worth?
Thanks.