I had been looking at swapping in vented discs off a new Isuzu myself, tho on a 4x4. I found on an 86 Trooper that nearly everything looked the same size as my 79 4x4 LUV except the wheel seal. If I got a part machined out to fit the Trooper's hub and accept the LUV's seal it seemed like it should work out. Swapping spindles could eliminate that though. I'm also not sure the outer axle shaft length will be dead on, but I figured I could measure that out and deal with it later if it was a problem.
On a 2WD with drums, it is easy to pull all the disc hardware off the spindle and swap it to the drum truck. Much easier than swapping spindles. That is unless you are trying for the vented discs.
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95 Isuzu Trooper Daily Driver
86 Isuzu Trooper reliable backup
77 LUV 2wd stock beltway blaster (resting)
79 4x4 LUV project: 2.6L, 5spd, 31s (eventually)
MEPR: Man, my 4x4 makes all other LUVs look good
