The truck is a 1987 ex-military 110 radio, 2.5L normally aspirated diesel. It was running an LT77 gearbox with a LT230 transfer box until the gearbox packed it in (2nd time). I have obtained a beautiful looking rebuilt "short-bellhousing" R380 from Ashcroft Transmissions in the UK. It's...

I have a '87 ex-MoD 110 NA 2.5 diesel which needs a transfer box change. I'd like to use one with the later input gear for lubrication. I understand that this will require a change of the LT77 mainshaft to the later type also. Is this within the realm of do-it-yourself with common tools or...