SBP to BBP?

Hey all. I know this question gets asked and answered all the time. But I am having trouble finding the posrt from the past.
Question is, what are the vehicles that I can exchange with my car? I have a 72 Swinger and I'm wanting to convert to BBP. I have the KH disk brakes now. I will be going to the junk yards this afternoon to locate a donor but not sure what will work. I did have a 79 Valare scouted. I went Saturday to strip the brakes but found the car was gone. When I asked about it they told me the car was crushed last week. Just my luck, i get the money saved up and they got rid of the car. So if I knew what other cars I can look for it would ge of great help. I just can't remember the site that would tell me all the exchangeable cars. Thanks for any and all help.
Jeff

You can keep your KH discs if you want, buy a set of `67 Mustang rotors, and have them machined for your bearings and spindle. I did it on my car and there`s a thread on here that gives you the part numbers for the rotors and grease seals. You can use your existing bearings. If you have an 8.75 rear end already you can contact Moser Engineering and they will rebore your axles and brake drums for a fair price. It`s the cheapest way I know of to get the 4.5"bc.