I can't find any mention of these guys in this forum - http://badasspowersports.com/
They offer engine mods for the 912 engine, including the following.
They have two big-bore kits, billet cylinders:
still 91 octane fuel
Any compression ration from 7:1 to 11:1.
91 octane fuel but 93 or 100LL required at 11:1.
Requires crank and cyl head machining.
Add-on fuel injection kits, three types (with dual fuel pumps)
Add on turbocharger. Replacement camshafts.
They don't show pricing. Located between Calgary and Edmonton. Anyone have any experience with them?