Going with a Saito 125 on mine, probably inverted.
Ooooohh!
Excellent choice. Fair warning though...fitting the cowl will take a fair amount of imagination, if you want to keep it neat. I ended up going with a split cowl (at the valve covers) and plan on redoing mine this winter.
edit...sorry Spud, didn't mean to highjack your thread. Ummm....I vote for the TNPC too.