For sale: 15x7 Keizer custom offset 914 wheels. I don't know of many if any other sets. Used for auto cross, these are a legit 10 lbs each, and on my car, fit under the rear fenders with no mods. It was tight. But they fit with 205-50-15 Hoosiers.

$950 for the set. Will meet to deliver in St Paul MN area, buyer pays shipping if you're not local to me.

pics- https://photos.app.goo.gl/JVrqixfJtpCHtUPU9

I wanted to know what they looked like...

Click to view attachment

Those are great rims! Back in the early 2000's I ran a set on my 70 with stock fenders.
great price! GLWTS

Yours are the only other set I'm aware of.

Click to view attachment

I have 2 sets with a wider offset and 5 lug centers.
Mine have a 4th piece, additional reinforcement for road racing, which brings the weight closer to 12 lbs.

Bump for 4th of July sale. 750 with local to me delivery, or buyer pays shipping if you are farther away. If they don't go for this price, it's back in the shed with the rest of the stash for another day.