new used radiator thoughts

[nater]

i recently rebuilt my 292 engine in my 64 K-10 pickup and was looking to get my radiator fix because mine was shot but the guy that's fixing it cant seem to find the right size core to replace it with. so i was wondering if there was a different size radiator from a newer car or truck i could put in its place that they might have made of like an s-10 or something and bolt right in and look good. possibly one that might have a v-8 in-case i decide in the future for and upgrade. i'm a little low on money right now and figured it was a good way to go for now and later when i get the cash get a new one
thanks, guys