They are about 90hp when new. Ones of a slightly lower build spec in australia repeately make 140-150 so id estimate its around that sort of mark. Its very torquey and will spin the wheels pretty easily. Because its been looked after so well and its such low mileage it handles great too its a real hoot to drive!
Also forgot to say no sensible offer refused! Its hard to price something like this as it is so unique!