http://www.rotawheels.com/subzero.htm
With what's on the site,it looks like you'll have to go 15"x6.5 for the right offset. 17x7.5 with a +45 offset looks a little high for our 240's. If you want any Rota wheels send me an email and I'll give you a price quote.
The Slipstreams might be a good option too, I'm not sure what the size specs are but they're light weight. 15" are under 12 lbs.
http://www.rotawheels.com/rota_updates.htm
~Jeff
__________________
Current Cars:
1976 Mercedes Benz 300D
1995 240sx SE aka Kate (winner: Best Stock S14 @ 2002 National Convention)
http://community.webshots.com/user/jeff976cal
If you're interested in parts email me
[email protected]