Front discs & HD 2 3/4 drums on 70 C-10?
 

I'm wanting the best of both worlds. I want to convert to discs up front (probably the later model 6 lug setup) & I want the HD 2 3/4" wide drums out back.

My C-10 currently has the old school 2" wide drums all around. I have put a power brake booster in.

Would I have to change my master cylinder? & where could I find a prop valve for the discs up front & 2 3/4" in back.

Best question yet, is there any model/year where I could grab everything at once?

Thanks,
John O.