After doing some research, I have looked around and decided these wheels are probably the best mix of price and performance (and I like the way they look). However, fitment wise, I suck. Not entirely sure if they make a fitment that will look good on our cars (not to mention, I don't see many, if any 370z's with them on).
Here's a link to their size chart for rpf1's:
http://www.enkei.com/size_chart/RPF1.pdf
Which would actually fit and be SEMI flush for 18's?
Or I may just go with forgestar f14's