GQ TD42 Rebuild Help

Hi all.
I'm looking at buying a GQ wagon with a TD42 and planning on doing a full rebuild myself.
I'm trying to download a workshop manual and will be reading it several times at least before touching the engine.
I'm looking for a challenge and any help on what rebuild kits to go with would be very helpful.
would love to hear from someone that has rebuilt a TD42 themselves.
And what the most necessary mods i should do first ?
P.S what's the best route to go with chopping a wagon ?
(Will be on my Red P's June 27th.)

Try the search bar up top on the right and you will find a heap of info on previous builds mate .