[mickmate]

Steve, the rear axles measure 1 5/16" dia rough so they'll clean up good at 1 1/4". Same area weight etc would be a 1 3/4" OD 1/4" wall which would be a good stout tube. I get my tube like that from Marmon Keystone. If you are narrowing a front end and duplicating geometry you could shorten arms equal amounts and sacrifice suspension travel, ride quality, increase camber change and bump steer or narrow the rack and move everything in further. Drawing it all out full scale per Heidts, Steve Smith, Herb etc is a good idea. I have a corner of my workbench laid out with nails for pivot points and wire at control arm lengths to make a working model of it before even building it. You can measure camber change and any other dimensions right off it. Yes I should put CAD on my computer but I'd spend even more time playing on the computer instead of working on my toy or other projects. Let me know if I can help with the axles.
Cheers Nick