I know that an older toyota rear -late 70's to mid 80's ---is six lug and has disc brakes...that is another option..and about an inch narrower.and they have so many options as far as gears and whatknot

as far as the switching over to hydraulic..the clutch master cylinder/resevoir is just align it with clutch pedal..drill holes mount it ...

have to run different proportioner? valves also with disc brakes i would think... a line here and ther...if i am not mistaken..