Which master cylinder should I get for this booster. Chrome 7 inch dual dia?

Hi guys!!! I got this hot rod and it has a 7 inch dual diaphram booster chrome exactly like this one pictured. It has a Jaguar master cyl. on it now and it is leaking so I was wondering what is a good master cylinder choice. I thought these came with GM units or something similiar. I have discs up front discs in the back.
Should I get an MC from a 70s Corvette or ?. Whatever is good and fairly cost effective. Thanks.

Make sure the master cylinder is designed for front and rear disc brakes, along with it you might consider the combination brake valve that Wilwood makes. It has an adjustable proportioning valve built into it for the rear brakes, along with a brake pressure switch built into it!

Here's a link to the valve I'm referring to, I've used them before and been quite pleased with the way they work!

Wilwood Brake Proportioning Valves 260-11179 - SummitRacing.com

This is from Summit, lots of other places sell the same part # though.