WOT: What would you put an R6 engine in? Options

[Rand]

I picked up a Yamaha R6 for a song. It was wrecked, but mostly cosmetic. I'm either going to get it working again as a naked bike for starters, or use the power train for something completely different.

If you were going to have fun with a tidy and compact 100hp powerplant with a sequential transmission, what would you do?

Already evaluating the bike option. But what else... Kart? What other car options would you consider? Just for fun, not trying to fit into a racing class or be street legal. Someone suggested a Legends car, but I'm thinking something lighter and lower.

If you wanted something bigger than a shifter kart but yet as low and light as possible, what ideas would you throw out?

Let's have fun with this.