If you think you're going to go with power brakes, then we'll need a little more info. First, vacuum or hydroboost? If vacuum, what are your vacuum levels at idle? Generally speaking, a larger booster will supply more gain/boost, and potentially impact MC bore size given the rest of the system. Assuming 14 inches Hg at idle or better, I would probably suggest a dual-8" or dual-9" booster and a 1" to 1-1/16" bore MC for best results.
If hydroboost, I would start with a 1-1/8" bore MC.
As for MC brand, that's up to you and how much you want to spend. I prefer standalone master cylinders without integral proportioning/metering in the outlet ports, as it makes troubleshooting easier and typically cheaper down the road. There's a reason the 1" and 1-1/8" C3 Corvette units are so popular both in their OE form and all of the aftermarket knockoffs.
Tobin
KORE3
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