Yes, it passed from NISMO to ENDLESS's ownership after NISMO had stopped using it. At some point after that ( my guess around 1990 ) it started getting more and more modified, and ended up racing in the 'Grand National Stock Car' series with the cut out rear arches and box-type overfenders. Its final active race season was in 1998, in the ENDLESS blue paintjob with CASHIEW as the partner sponsor.
It got cut about a little bit in its ex-Works life, but most of it is still there and saveable. The guy restoring it knows what he's doing, as he's an ex-NISMO race mechanic.
The original type VDO boost gauge is one of those parts that seem like they should be easy to find, but turn out to be quite elusive.....