Auto Art have just started to release the r32 japan grp a gtr's. I have just bought a Calsonic one for $127 and the detail is sooo much better than they kyosho ones.
So far they have released the Calsonic (limited run of 6000 units) and the Kyoseki (3000 units).
The Taisan/STP (this is the one Tsuchiya aka drift king drove)should be available soon as well.
I would assume he winfield car is worth som much more as it was the most controversial (some say stole Dick Johnson's win), however I would still love to get my hands on a model of the 91 bathurst GTR.
BTW ajrichar, great collection must have taken some time! LOVE the signed winfield gtr poster board!!!