need 22 inch OEM style radiator

'76 volare 318 the original one just sprung a leak old and rotten (like me>).. Last year I could find brass/copper oem style rad. for my slants, NOW all I seem to find is an alum/plastic rad. for this 318 in 22 inch. Spectra or whatever name, seems to be the same. Am I dreaming!!!!