Hey all. So this guy wants to buy the coupe. I told him, as is. He asked if I could help locate parts. I said sure. Some of you have allready talked to me. My question. Which radiators can be used in a Coupe (ie 4000 quattro, 87 coupe, quantum) and why is the 5000 different? It doesn't LOOK different (going on memory, please don't crucify me.) Thanks for info Kwattro