I would suggest going with the calipers without the e-brake. Much cleaner setup, thats what I did. Later on I'm planning to go with the t-case parking brake from all pro. I've also heard the cable is a pain to adapt to the gm calipers but I've never done it so I dont know for sure. I think a junkyard would be your best bet, if you have one near you. Many firebirds, camaro's, monte carlos, and buick's have the same brakes. Basically any mid 80's gm car. Hope that helps