Hey there Well my project is underway for adding electric start to my XR600. http://i26.photobucket.com/albums/c104/torbreck2/136_3634.jpg http://i26.photobucket.com/albums/c104/torbreck2/136_3635.jpg I have attached some photos of the mock up - I confirmed Friday night all the 650L engine cases etc bolt straight on!!! Anyway I need a favor from the 650L guys - can one of you look at where your starter motor bolts onto the engine case and tell me if the 2 holes it uses in the engine case go all the way into the motor or are they just only about 5-7mm deep? Thanks heaps!!!