Outer Limits 4x4 Board

Hey guys,
I've done a search but haven't really found any answers.
I have a WT zook and I'm chasing a towbar for it.
A bloke in the same state has a NT towbar that he is willing to sell, he has given me the measurements of 1050mm wide, outer holes roughly 1000mm and inner holes 865mm.
If anyone could please let me know if they have put a NT bar onto a WT before, that would be appreciated.
I do remember reading somewhere that there may be an issue with where the leafs connect to the chassis (I'm a noob and don't know what thats called)
thanks
Adam

Mate, all N/T (1.0/1.3) and W/T (1.3) SWB Sierra's use the same towbar (ref Hayman Reese #980), but this doesn't include SJ80 coily (it's faintly different).

thanks heaps for that info..