I have been spending hours reading up on this, as I would like to do the same. I'm only 6'2", but I also have arthritis in my hips and knees and I'm hoping to stretch my legs out a little. If I buy just the rails, would I be able to take all the parts off my roadster and just change them over? Excepting the brake line as you mentioned in your post.
Also, does anyone know if touring rails (Like these: https://www.ebay.com/itm/Triumph-OEM-Foot-Peg-Control-Mounting-Bracket-Assy-Rocket-III-T2082900-T2082901/362610721808?_trkparms=aid=111001&algo=REC.SEED&ao=1&asc=20160811114145&meid=6d09e3371005433c95f17b6663e39fac&pid=100667&rk=7&rkt=8&sd=283510134906&itm=362610721808&pmt=0&noa=1&pg=2045573&_trksid=p2045573.c100667.m2042) would work or do they have to be classic/standard?
I have highway pegs, and they help a little, but in traffic my hips only last a few minutes before it's painful. Any help would be greatly appreciated!