hotrodrays here would like to convert frt.drum brakes to disc and add power brakes with pedal comming through floor anyone with any useful information or maybe a diagram of a frame with a mounted master cylinder will be appreciated

If you still want to use the corvair front suspention , the June 1997 issue of Rodders Digest has an article on how to adapt disc to this. It uses '79-'85 Olds Toranado rotors and '82-'95 S-10 2 wheel drive calipers . There is a bit of machinework required , but its nothing too wild . Mostly cutting out the brackets and turning down the outside of the corvair hub to fit the rotor . I don't have any way to post the article here but I could photocopy it and send it snail mail.