CONS:
ZF shifts to early for engine torque. Manual shifting gives much better performance.
PROS:
Sounds farking wild with twin exhaust.
Fused Spider Gears in rear rear diff.

Clunking front diff.

Ok, so maybe those aren't pros....... but i know how to change 'em out now

Gotta cut more holes in the bonnet, getting a bit warm. Flogged it pretty hard since getting it out of the shed and no gearbox problems....yet. If the ZF goes then I'm pushing the whole thing into the creek. but i'm pretty confident we got it right.
Thanks Auto_Eng for all your help. Your big words and and nit picking really made the job go faster.....hahaha, just kidding mate.
Thanks HSV Rangie for your info all those years ago.
Tips for anybody else:
Take photo's of everything BEFORE you pull it apart
Don't ask your engineer for advice - He'll just tell you the HARD way, Oops, I mean SAFE way....

Well I'd better go bootleg some more beanie babies so I can buy some fuel.