Sounds like you have quite the collection going. I have a soft spot for the big bodied Caddys of the '80s myself. My Grandfather had an '88 Brougham when I was in high school that I used to borrow every chance I got. All my friends thought I was crazy for driving something almost 18 1/2 feet long, but I loved it. The 307ci was very underpowered for a car of that mass and the TBI didn't help matters. He had a 383 stroker sitting under his carport that I always dreamed of dropping down in it so I know how you feel with your '84 Coupe. Hope you get it worked out and be sure to let us know if you do.