Well after many years on hold I'm finally going to start work again on my 1980 Max IV serial #6448. Years ago I removed the frame from the body doing so I had to cut the original axles, two (2) of which were bent anyways. I'll need to source or fab new axles. I'm going to replace all the bearings on flanges, currently the outer bearings are the 62mm size, does anyone now if I can upgrade them to the beefier 72mm size or do I have to stick to the 62mm size? While i have to frame out I'm going to measurements and use the frame as a template to make full length outer rails w/ integrated plow mounts. I plan to do the T20 split shift mod, replace the front bench seat w/ a single suspension seat and reinforce / beef up the frame side of the rear hitch. Once the frame is back in the body and the body halves are together I'm going to fabricate a body band w/ winch mount. Any other mods or changes that I should consider during my restoration?

Thanks,
Mike