[argonaut]

Agreed. Rear disks are kind of like crossover steering, not necessary for *most* trucks.
Also you can't get the correct front to rear brake bias if using the same bore calipers in front and rear, even if you use an adjustable proportioning valve turned all the way down.
I put small bore Wilwood calipers on the rear of my truck along with a Wilwood adjustable prop valve turned all the way down. They work great and look great but I have no parking brake (until I put a transfer case brake on). If I was doing it over again I'd have cleaned up and rebuilt the stock drums. Just saying...