Well, I started stripping bits and pieces off the Z20LET radiator yesterday and found that said radiator has a 50 cent sized hole in it, so I went and ordered a new one. Also took most of the engine bay loom out in preparation for the new loom when it arrives and started fitting the Walbro in-tank pump (and removing the in-tank fuel pressure regulator whilst I'm at it. Front part of the exhaust is also fitted and the AC bracket and tensioner have been removed.
Next up, I'll probably finish taking the engine bay loom out and refitting the fuel pump assembly. Taking the intake manifold and alternator off too, so I can get to the coolant hoses underneath and fit the M-Tech alternator bracket when it arrives. Steering knuckles should be back this week, so I should be able to bolt them in, put driveshafts in and the brakes back on (waiting on new discs in my M-Tech order too). Any luck and my hoses should be here this week too.