hello ron,
have you checked rotorway?... my experience on the rw 100...is that it is a hybrid of all kinds of auto parts.. my friend KEN MINTZ,, used one on his varieze for a couple of years UNTIL ..IT FAILED AND HE CRASHED...3 YEARS AGO...
luckily he walked away...the varieze is still being re-built by him...he has installed a 0-290D SINCE....
and i do KNow THAT he still has that RW engine in his garage...E-MAIL
HIM...kmintz2@cox.net :?