This site, run by Video Collector, is your best resource, though I don't believe he has any high resolution scans. You might ask him though.

Also, ChainsawASH made some covers, a good few years back that I think are closest to what you are talking about. I had a similar set, but it was based off of the widescreen set with the fat box.

I have thought about buying a box set just to scan, but either people want way too much money for them, or the sets are in bad shape.

I don't believe anybody on here has made an actual high resolution set utilizing that box set. Most have had to recreate it, which is hard, because the images used on the backs where production stills that are hard to find in decent quality for the average hobbyist.