Most teles would be the same size, right?

Best thing to do, is find a site where you can buy a fender tele case, and ask if they know if it would fit your Peavy.

Also, email Thomann and ask if they know if the Peavey is a regular size.

I'd guess most teles are pretty similar shapewise, that's what makes them a tele.
Double check first, by all means - but go for it.

(Hard cases ftw.)

If it's shaped like a Tele it should fit in a tele case just fine. Go to a store that sales cases if you can, and just try it out in some different ones.
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