I need a new front rim 21x2.15. I am looking at a few HD stock ones just for ease of install but I see these Ultima 60 spoke rims on e-bay for really good price. I am a shade tree type mechanic and dont know what I'm in for when I see (modifications are required for spacers or use older axle for this rim on your 07 bike.) Has anyone been thru this or should I just stick with the factory part selections. Any advice greatly appreciated!