Looking for grips and throttle tube for a project

[bmart]

Going to tackle a project on two of the other bikes (FJ is long gone). Trying to find bikes with the 135mm grips to use their throttle tubes on a 250Rally dual sport and 1990 CB-1. I haven't had much luck finding bikes that use these longer grips or the actual measurement of the throttle tube in length. Any help would be great. I think that I used OEM Yamaha grips and ProGrip model 698 on my FJ when I had it. My ands don't fit well on the very short grips I have.