Thanks, AutoXCuda. I'll probably use 10" drums. I like those ceramic linings Muscle Car Brakes sells. In the late 70's I had metallic 11" shoes on my 70 Challenger R/T, with G-60's on the front, and L-60's on the back. That thing stopped faster than anything I've ever driven. One time, a kid ran out in front of me, I swear those brakes saved that kid's life! I know, they had to be warmed up a bit, but because they were so big, it still stopped well when cold.
I kinda figured the truck discs' would be too big. I have a guy interested in buying the truck when I get the parts out that I want. It'll be easier to move (and sell) w/ them on there.