Since the first generation of the Honda FIT, I've been a huge fan of the littel Kei-car. Check out this incredible build from the Philippines. The JDM spec sheet sounds something like this; Mugen widebody kit, Volk Racing TE37 wheels, Endless bbk, HKS turbo kit, Bride buckets, and much more.
This is one of my top 3 Honda FITS of all time.