another car?

do I need another one? NO! I have a small herd of early A bodies i'm piddling with. but i'm retired, tired and poor! I work some in the summer to buy parts and like to have things to keep me entertained, so I've decided to look for a 67-9 A body to make into a 383 car. I miss having a BB car! NO show poodle, just a driver, no racer.
i've had bunches of Mopars since the mid 80's mostly B B cars, had a real 67 383 cuda once. I pretty much understand what the BB 67-9 cars had from the factory.
I realize Schumaker's engine brackets are great, but I intend to make a correct 67-9 k frame and use the biscuit brackets. I have a left, will need to buy or make a right. I understand there is a video to make a spool type DC style k member. but that's not what I want to do. ( why do it the easy way??).. I will be looking for someone that can give me the measurements of the 67-9 k member.
I 've have read lots of previous threads, but I will ask this. some say you can use B B exh man. I don't want headers nor will I pay for the original ones. is this true, and what cast no. do I need????
I have also prowled BigBlock Darts site, no doubt some good info and probably lots od FABO guys there too. a car buddy said, don't you need the car first?? I said, no. I always can find a suitable roller priced right if I look enough! I look forward to this adventure.