I don't believe VPC was ever released for classic Macs. There was, however, an older program that did essentially the same thing called SoftPC, which did have 680x0 versions. I have 3.1, which you can read about in a thread I just posted in within the last 24 hours. (It runs text-based programs like WordPerfect 5.1 fine, at least on the 25MHz 68030 machine I have, but forget about it if you want to do any sort of gaming, even those with simple CGA graphics).
I was looking for an older version of SoftPC, thinking it may be faster, and found there is a copy of 3.0 on eBay right now if you want to go ahead and purchase that. I know 3.x doesn't work on 68000s, it needs at least a 68020. I'd recommend a faster 68030 for productivity; I couldn't see it working as well as it did on something slower than my 25MHz PB180c.