I just picked up a 1965 Chevelle 300 post (http://www.ourphotos.org/chevelle/index.html)

I was wondering, is this body style the same measurements as say the Malibu?

What I'm wondering is can I put on the same set of wheels that I see people who have Malibu's or SS's, or do I need a special size wheel?

nothing special needed from a stock stand point
if you modify its just that-- modification, so measure everything up before you buy your wheels