Can anyone tell me if a master cyl for a 68 would fit a 74 nova. I have switched from drum to disc on the front of my 74. I have all the parts to finish as power brakes. But was wanting to go manual brakes.The folks at my local parts store and Jegs tell me that 68 is the last year that they show disc with drum rear without power. Soooo if a 68 MC would work I could use it. I am getting alot of info about proportioning valves or blocks with power or without manual or discs. Don't know whether to drink a beer:beer: or wind my watch. All help is very welcome.