Are you replacing a bent or damaged radiator?
If so, Mylers Radiator Repair in utah does a bang up job at very reasonable cost. They may be able to repair what you have. They have fixed some messed-up stuff for me.
If you need to buy one, and used is okay with you, I suggest you give the folks at Motorcycle Sport in Oxford, AL. they keep good stock in used bikes and parts.
They may also know about interchangeability with other models.
Then there is Willies Cycle Salvage in AL also.
I have their phone numbers at my shop. All three companies are on the web I beleive. If you want the contacts info you can pm.
whoosh
Kent