We selected Tosten grips which Kevin Williamson, the owner of the company, custom shortened for us. That was necessary because we had custom sticks of 1" CrMo tubing bent to accommodate our non-standard seat cushions. The biggest problem was making sure the grips did not strike the bottom of the instrument panel or hit the engine controls mounted in the center under the panel. After much work, we got it them installed so they work well. Ron VanSickle, a wonderful friend and master machinist, made a steel socket and welded it on the end of each stick to accept the grips. Marvelous! Thank you Ron.