http://www.benl.ebay.be/itm/AIM-MXL-Pista-Yamaha-PnP-GPS-Smartycam-/110995635440?pt=LH_DefaultDomain_123&hash=item19d7dafcf0

Used it on my R6 and later on my RoadRunner SR-1 BEC
So if you have a BEC with an R1 engine ... this is plug-n-play
http://www.youtube.com/watch?v=jCMq0ZCJ7k0

Cu,
Wouter