Benny, get me the dimensions ID/of the bars and the size and thread of the screw you are using. I will turn you a couple. I am not sure what you are dealing with but I envision a plug out of brass or AL that you would have to tap/drive into the end of the bars. I can drill and tap it for the screw size you are using while on the lather to make sure everything is dead nuts on center.I know there are some dis-similar metal issues but I don't think it is a show stopper. The only other option is SS and all the scrap I have is 1" round.....takes a LONG time to turn that down...I am lazy and don't want to engage the backgear,lol. Seriously, take a dial caliper and get me the dimensions. One caveat, give me the exact dimensions of the hole. I will cut the bushing with about .02 relief, otherwise you will be doing a lot of sanding and cussing!!
Oh yeah, thanks on the grips. I really like the feel. If ya can't afford the Rocket you can get the grips.