Thanks for all the replies. However, it is all still clear as mud. From what I have been able to gather from your responses I have made the decision to go with the brake kit with the Chevy style rotor with Mopar 4.5 inch bolt circle and 69-77 GM calipers with a 2.8 inch single piston.

Unfortunately I have no part numbers or anything from what the previous owner used when he put together the front brake system. I was able to take casting numbers off the calipers and figured it out through a google search then compared the photos to what is on the car. However, I have no clue what rotors are on the car. Purchasing the full kit will give me a new start from hoses, bearings, rotors, calipers, pads and everything else. This way at least I know what I am working with. Once I get it all installed if things still are not performing like I think they should I may try throwing the 1.125 bore master on.