"x" wrote in message news:RI17b.395481$uu5.73501@sccrnsc04...
The hi-performance endorsement is for the pilot, not the aircraft.
Experimental/non-experimental is not a factor.

61.31 which talks about requirements for category, class, and type ratings as
well as the tailwheel, high performance, complex, and high altitude training
requirements, has a clause that exempts experimentals from the "ratings
limitations."