additional cost. Those are the next step up and it's a nice jump because not only does the wheel size change but you can run more peak boost (22ish versus 19ish on stock) so all the way around it's an improvement.
"When I rev the engine, I want people to think the world is coming to an end." - Homer Simpson My Zs:www.zheaven.com - Have a question about either of my 300ZXs? Answers lie within. Member:www.SoCalZCrew.com - Come find out how we do it in the West