Powered by the powerful 875 c.c. But it was't available then yet. The original design as shown at the 1967 London Motor show uses the 875 Imp Sport engine. The engine overhangs the back. But the car is 3ft. 8in.
Front suspension is adjusted to give negative camber.
A very low rear roll centre reduces weight transfer. Substancial construction, although when you hit a pot-hole at a low speed, it sounds like a major disaster. The braking uses Triumph discs and Imp drums and works well. About 15 Mk1s were made before the design was modified to include a front mounted cross flow radiator with an electric Wood Jeffries cooling fan. No further cooling problems were experienced.