so i have an old italian road frame that i use to shoot around/get beer/treat like crap - fixy-fied previously, now single speeded with drops. now i wanna put 700x32c tires, the biggest that clear the chainstays. i could probably find a frame with rear canti mounts but then i would probably have touring geo and no 73deg headtube angle[i like aggressive geo]. i have some old sidepull weinmanns that are barely clearing and would like a better option. swapping a fork is easy but how do i get cantis on the rear - aside from welding?