Have a look though this thread:
The Complete Manual Conversion Thread
Pedal box will be hard to find, as will the appropriate interior peices. Mal wood Auto do a Pedal pin kit though
-Mal Wood Automotive-
Make sure you've got the right flywheel. (if its a used one, get it re-machined costs around $50)
If its a series one VN you'll need a flywheel adapter from CRS its mentioned in the above provided thread
Make sure youve got all ur bolts that u need i.e.:
- Pressure plate to flywheel. holden spare pt#11051927
- Flywheel to crank. holden pt #92060691
In how good condition is the clutch your getting? Make sure your clutch cable is in good nick aswell?
In regards to the Manual ECU and loom, you're a lucky man if you can nab one of those on ebay cheap.
You can buy converted ecu's with a patch loom on ebay From this guy
trx100
You can go the otherway however and get a spare memcal and have the tune altered to turn the automatic error coedes turned off.
If you do that you'll have to do the patch loom yourself. Instructions are in the manual conversion thread.
I Hope this will help you with your project.