Revhead

My 62 Skylark convertible has been upgraded with a later year Rover engine. Rover bought the engine and kept making them into the 80's with more HP. But the car still has a single master drum brake system. Spooky!!!! I am considering options including upgrading to 5 bolt wheels. At a minimum, does anyone make a power brake conversion that doesn't require moving wiper motor or other mods? There are two studs coming out of the firewall on either side of the master. I am assuming those were there from factory for a power brake option. How about a front Disc Brake conversion with matching 5 bolt rear drums? Any bolt-on suspension mods so it actually drives like the light weight sports car it could have been. Nothing radical, heavier sway bars and better shocks ? I read somewhere that Corvair disc brakes will fit on the spindles, but some issue?? New to the club and may be offending people by not keeping it original. I have other cars, majority kept original. She will stay original looking with all the funky fake fender vents. This one just seems to be so perfect for minor mods to make it a road worthy daily driver. Suggestions will be greatly appreciated.