After doing some research I decided on the '73-78 Chevy truck, non-boosted, MC. I just ordered it from Rock Auto as well as wheel cylinders and hoses. It was a bunch cheaper than ordering from the usual truck specialty vendors.
The best price I found on the bracket was from CPP.
I'll get new brake lines locally. The master parts book lists the lengths needed and I'll bend them myself. Of course I may have to adjust those lengths to compensate for the different MC.
I'm doing the brakes in conjunction with installing a '59 GMC rear end with 3.07 gears.
