I'm in desperate need of a radiator for my 89 csx. Mine is beyond repair and all parts stores, dealerships, and radiator repair places have pretty much laughed at me and then hung up with their good lucks!
Arizona Parts lists part number 4401022 available for a Turbo II Q body. I am not sure if that is compatible with a Turbo IV P body. But I would think any Turbo II radiator could work. Any radiator shop should be able to custom build one. I had one built for my CSX. It wasn't cheap but you do what you have to in order to keep these Shelbys preserved. Good Luck robin