UPDATE: After years of getting nowhere, the last few months have been eventful regarding the hunt for 4x140s. I found a beautiful set of 15in superlights...in Wollongong, AUST
After agreeing to pay 450AUD, and then ship them over via Jetta Excess Baggage for another 300AUD (about 1000NZD all up), the seller DISAPPEARED!! Still no comms, which is odd, because he was happy to do the trade and offered them to me at 450. At the same time, there was a brumby being sold with a spare, and the spare had 4x140 turbos in 13in. I jumped without seeing them (only 50min away) and got a set of 4 average condition alloys with crap tyres for 250. And that was all just after new years.
Finally, i got a good set of 5 steel 15in 5spokes painted black with brand new tyres this week, and drove to Tauranga to collect them. Now fitted, i finally have more rubber on the road, AND a bit of extra clearance ;D
I still like the idea of changing the hubs and having more options, but for now i can say im at least satisfied. Its not my favourite and im still hunting for a set of 15in superlights or 14in alloys (these current ones are steel so a bit heavy), but least there's something there now not 13in steel! Anyone still have anything out there for me???