Here's an update on progress:
All the running gear is installed, engine is rebuilt, diff overhauled, brakes restored with new seals/hoses/pipes. Only the gearbox is untouched as it appeared to work, has only 36Kmiles & wasn't leaking. Hydraulics all bled & brakes/handbrake adjusted.
Engine bay is fully complete, per original with exception of battery relo to trunk in order to create space for AC and the bracket for the windscreen washer bottle..that got removed way back when the RHD conversion was done...need to make something.
A custom stainless steel exhaust has been made locally, following original route/shape as much as possible.
At the rear the fuel tank has been cut open, a band of rust cut-out & replaced and fully cleaned inside. The sender unit has been salvaged (centre rod had rusted thru), fuel pump cleaned with new 'o'rings.
Exterior is all complete with exception front/rear screens (waiting for headliner) and the waistline trim...still unsure if i should go for a vietnam-made stainless set or restore what I have. Wiring loom has be cleaned and re-wrapped, fusebox restored, relays tested.
Headlamps and front indicators I found new-old-stock in Kuala Lumpur, rear lights i bought good used parts in UK (most original plastic is sun-bleached /cracked), rear bumper cleaned-up quite fine.
The big news is: It starts & runs! I didn't drive it as still no steering wheel or dashboard, but I wanted to start it to check the engine/injection functioned. Engine sounded good, no unexpected noises, took a while to pickup onto all four cylinders (priming of injection lines i guess), but now starts cleanly.