Help identify this dual disk clutch/flywheel?
 

Okay guys, I chickened out on using this super-trick flywheel/clutch combo on my Triumph TR6 based street toy build. :(

Have not found the maker but it appears to be a very high quality piece in excellent condition.
It came from an unfinished road race car from the LA area that apparently was started on a fairly long time ago.
I would like to know who made it, and if they are they still in business.

8.5 Lb. flywheel and 9 Lb. 7-1/2 OD dia. steel clutch insert, 8-3/8 clutch cover assembly.