i got mine made in Tamworth, place called Retorque. cost a pretty penny, but i needed it done by the next day so i could continue to brisbane with my new toyota box. he had to get bits from 3 interstate cities overnight. thicker tube with holden 6 unis.
if the unis on the standard tailshaft look like they have been pressed in with a stubby lid, they are non-replaceable

I dont get the whole non-replaceable thing, my 1200 service manual has it all in detail how to service the tailshaft, ive also seen new 1200 unis on ebay for sale.

anyway, ive got one that will fit your ute.
might cost a bit to get it to qld.

i got one extended (my toyota gearbox 1) and it cost 300 to extend it plus freight to melboure (400km away)

all up cost me 400
and that was just to extend it...
did a damn good job tho

Hey joshua1200 had my tailshaft made at
Gibbs Truck & Trailer Parts
2 Sunlight Drv Burleigh Heads QLD 4220
ph: (07) 5520 7522 Truck Equipment &/or Parts
ask for the guy who does the tailshaft work, best to call him before luch if you want to get hold of him