A newbie Drum Brakes Question

Okay, time to show my newbieness. How do I know if it is 10 1/2 or 10 3/4?What rear drum brake kits do I need to buy for rear drum brakes? I have the drum and backing plates. Now what? I know I need the wheel cylinders, pads, and spring kit (hardware kit I believe). Is there some way to buy it all at once?!?:shrug: Thanks.
 
you can get all that at Autozone. Dont waste $$$ thru a catalog for that stuff.



Dont try to rebuild your wheel cylinders. Its a PITA, and the cost of new cylinders is just a few dollars more.