As far as rim fitments for these r32/3 setups, i just had a chat with Retro Wheels (NSW) who bought the licence off Simmons to make all their 15" rims, they are able to custom make up any size offset rim and extend the center boss to give you the caliper clearance you need (up to 40mm i think), i figure this is more than enough to fit over skyline brakes (the guy i spoke to said that he had used GTR brakes on his sons celica and made the rims to fit over that), i also asked how much it is to make a custom design center and it was a fair price if a few people wanted to get together to make up some JDM style rims that where accessible in Australia, just a thought.