Mainly considering between TCR/Allez/OCLV/R series - on derailleurs, b.b., seat post, stem - 9-speed yrs '99-'04. I know this is could be a broad subject but concerned with cable routing, tube sizes (for der clamps), b.b. widths, when swapping components. Any help is appreciated. I gave experience with frame-ups on mtb but not on road bikes .