Will, many thanks for this.
See your point on the front internals, although I'm still tempted to go with the new CV's/Half shafts at the front, partly because the existing ones have had a hard life, but also because a broken CV will leave me with an undrivable vehicle, whereas a broken diff will mean I can pull out the shafts and creep out in 2WD. (Someone please tell me if this is bad logic!).
Also, I'm loathe to replace a brand new diff without at least getting a trip out of it !
Had a chat with MD Eng. about their 242mm HD clutch (they're no longer doing the 250mm) , but at £370 for the kit it's a little painful on the wallet. A 130 clutch is under £100 – do you think the difference is worth it?
Your experience with the R380 is worrying me. Mine is an Ashcroft, with I seem to remember, "bigger bearings", what that means in practice I'm not sure. Would it be worth adding a cooler?
Rick -- Uprated back axle shafts are on the wishlist for next time, the Maxi drives look good, in the meantime I'll have to grab some new OE's to hit my deadlines.
Oiled bearings - sounds like a good option, is it really as simple as leaving out the seal? Anything else to consider?
Diesel Jim - does it come with chassi, engine, stereo etc.?
John - will PM