Used tyre(s) wanted 35 OR 37 x 12.5 x 15 inch, any level of wear odd tyre or a set

[simon 45]

Unusual request but I'm mocking up my spring over axle fj45 and can't pick between 35s or 37s.

Does anyone have any old tyres in 35 or 37 to fit 15 inch rim? I want to experiment and set final height / wheel offset before expense of a full brand new set.

ideally AT rather than muds but if worn doesn't really matter, just to give me an idea.

Anything considered.

Thanks
Simon