What's the best modern master cylinder for my 1974 Duster?

If you have a mildly modified engine with headers producing a lot of under hood temps you might benefit from one of these to stop cooking the seals in the M/C/


https://th.bing.com/th/id/R550df81ecb96180db68039ac2a8f13ae?rik=2A5TIreS7vxkeA&riu=http://ep.yimg.com/ay/chucker54/master-cylinder-heat-shield-1.jpg&ehk=h2ustsNsAPcWWV1laCFKD7+EpwYRZ4ky9v/pxN3L5qI=&risl=&pid=ImgRaw

this was a factory big block A body item //even ma mopar knew