Welcome back, Mac. If you've got 13" Spitfire wires then you should be able to get a new set of 'short' hubs, nuts and spinners for a little over £200.
http://www.ebay.co.uk/itm/WIRE-WHEEL...item5d25f27dd3
Second hand adaptors would be cheaper, but the splines
do wear out with use leaving you with no drive and/or no brakes...
Looking forward to seeing some progress when you get back from Sri Lanka.