One thing that may help those of you thinking of building these axles...a cheaper alternative to drilling the unit bearing hubs & rotors to 8-on-6.5 is to double-drill your wheels instead. I'm using a '02 D60 that's got 8-on-170 for my front SAS but I've got an older D60 rear that's 8-on-6.5. I'm having my wheels double-drilled for $20/ea., which is way cheaper than drilling out the hubs/rotors. Not to mention when those components wear out or fail, I won't have to re-drill the replacement parts.
'96 taco mall crawler on tons