Yes PP, the design is exactly the right combination with the integrated drum handbrake - it was simply the cost I was railing against.
Only reason I'm going for a 'home-grown' conversion is that I've done loads of this kind of stuff before and it doesn't phase me - not everyone (understandably) wants to tackle it.
I'll just stick with the little TRD until someone builds a lightweight 4X4 with a (decent) TTD V8, 4 wheel (4 pot) disc braked and live-axles with decent articulation......oh, hang on...an F250 Raptor might fit that bill?
Pity I'm broke....