I put a 2 into a 95 Formula S and it was bolt in exact fit. Not a 136 mind you though. The 3 will be different bolt holes though as they were different. As for length, I put a 128" track in a 04' Zr900 efi and it fit but just barely and when the suspension moved to the end of the travel the studs would sometimes bang a bit on the end of the tunnel and catch it (and bent it as a result a little.. not enough to worry about but it did it as a fyi)