The simplest solution is to buy a CMP M1 Garand - but if you're not buying it in person at either the NS or SS, but doing so by mail-order, then you can always
ask politely for a S.A. M1 with a WW2-era serial number or any Winchester M1, and then cross your fingers and hope the order-taker processing your paperwork is in a good mood.
If you're successful, the receiver will be, technically, a "WW2 receiver," even if every other part on the rifle has been replaced in what were likely
multiple rebuilds since at least 1945. And then the
really expensive fun begins as you chase down every other part needed to restore it to a totally 'correct" WW2-era M1.
Good luck.