Yes, Those are RRC.

Why swap disco wheels for RRC wheels?

I like the look of the RRC wheels more than the Disco wheels that are on there now (fat five spokes). There are some other Disco wheels that look better, but not available near me at the moment. The RRC wheels don't look bad on the '94 D1 I have back in So Cal, so I figured since these RRC wheels are local, and fairly inexpensive, I'll try them out.

If you can get the RRC lug nuts, do it. The are solid steel with out the crappy chrome sleeve/caps over them.

I think the center caps for RRC and D1 are the same. All D1s can use RRC wheels.