I see no advantage or disadvantage, depends on what you want to pay for a master cylinder, and if you like looking at an adapter.
Depending on your intended use, you may consider swapping to a dual circuit master cylinder and run two boosters under the cab, one for front and one for rear. Or a firewall mounted booster before the dual circuit master cylinder.
You say you will do it right the first time. That would either be the correct Chevy master, or a newer dual circuit master, depending on if you plan to use the truck or not.
Grigg
