Tank question

Hi guys, My neighbor has an 81 CSR1000 that I want to buy.(cheap) The main problem is that the tank is no good. Rust is so bad that most of the left side is gone.:ohmy:
I've been watching ebay for a tank but no luck. I see tanks from LTD's of the same year. Will they fit? If not could you tell me wich ones will?
Thanks.

I'm pretty sure that the 1981/2 CSR (M model) is pretty much interchangeable with the 1981/2 LTD (K model), including the fuel tanks. But, I don't own either so I cannot verify.

I have a good 650 CSR tank, don't know if it will fit or not.

Thanks Mcdroid, I've been looking at some pics and they look the same to me. Wasn't sure though.
I may be interested in that tank baldy110... If they're
the same that is.
I'm going to check out the kawi site to see if the part ## are the same.

Thanks