My 51 mirrors were rough just like that . I found Raneys in Florida bought stainless arms ,they have 3 adjustable lengths with several choices on mirror heads.The clamps I made out of sheet stainless with stainless bolts and stainless acorn nuts the trouble will come in trying to keep sharp edges away on your clamps. The truck had brackets already on the doorsmirrors are solid and dont vibrate nice view of duals and the road. Also great to hang onto out there in the air flow like they say doesn,t get any better than that!