I must replace the radiator on my 1975 26' I dont know the model, can any one give me a lead on a new or used replacement.

Do you have the Chevrolet chassis with the 454 engine?
Matt

Or post the serial numbers from your data tag, which would help identify the model.

A while back I did the rad on my 86 Regal. OEM style filler neck was hard to find but I found numerous radiator choices at Summit Racing.

https://www.barthmobile.com/eve...963900687#3963900687

My radiator leaked also. Opted for a hot rod aluminum replacement that did not have the inlet, outlet, drain, or filler welded in place. Had a local welder locate them where they needed to be. The fittings come the with radiator.
The radiator is a bit smaller than the old one, but it cools better and mounted using the old hardware. Second problem was the old one had a transmission cooling circuit, this one does not. Added an aftermarket transmission cooler.

Been two years, works well!!!