Kinda makes you proud (for Suzuki) that their engines seem to be the go-to choice of some very creative engineers...
Here's the (American: Milwaukee WI) Hartley Enterprises with their development of Inline-4 and V-8 Suzuki Hayabusa-based engines:
http://www.h1v8.com/page/page/1562068.htmAnd here's Radical Performance Engines (in the U.K.) with their development of (absolutely beautiful) Hayabusa-based V-8 and Hayabusa or GSX-R1000 based Inline-4 engines:
http://www.radicalperformanceengines.com/engines/