Here's another very nice example of V-Twin motorcycle power in a purpose built car, called the TwinTech, it's powered by an S&S 124 engine with 125 hp and 125 foot pounds of torque. It's the brainchild of Dave Piontek who many years ago built the Sportech, a kevlar bodied car powered by an 1100cc inline 4.
The TwinTech story goes that Dave was watching American Chopper when he decided one of those V-Twins should be dropped into a space frame chassis. Dave formerly worked for Ford and he shared the idea with a couple of engineering buddies, Jay Novak and Kip Ewing. Together, the three of them came up with the prototype seen here.
Specs are 1120 pounds, 50/50 weight distribution, 0-60mph in 4.5 seconds and 1.1g on the skid pad. Dave says, a bigger engine and supercharging may be available for 200+hp if 125 isn't enough.
They didn't scrimp when sourcing components and the finished car will go for somewhere around $50,000. After a while, expect kits to be available as well. This looks very well done, I like it and I bet it sounds great!
More photos below: