1967. He also felt that this relatively heavy, rough, and noisy engine was not appropriate for a new luxury car. Lawrence put Tastevin in touch with Edward C. "Ted" Martin, who had designed an engine that Lawrence thought would work well in the Monica. After evaluating the engine Tastevin bought the design, rights and existing tooling for Ted Martin's engine. The agreement included four complete 3.0 litre engines. The Martin engine was an all-alloy V8 with a single overhead camshaft (SOHC) per bank driven by a toothed-belt (originally Gilmer belt - see also Timing belt). Designed for the new 3-litre limit announced for the 1966 Formula One season, it weighed just with ancillaries and produced @7000 rpm. An unusual feature of the Martin V8 was that four of the connecting rods were forked at the big end, much like those on the Rolls-Royce Merlin engine. The connecting rod for the opposing cylinder bore fit into the gap of the forked rod. This meant that the cylinder banks were not offset on the crank-line, reducing overall engine length. The engine was used in the Pearce-Martin F1 car as well as the Lucas-Martin, a modified Lotus 35 Formula 2 frame that was run briefly in Formula One. It also appeared in 2.8-litre form in some specials, including some of Lawrence's own Deep Sanderson sports and racing cars. This initial prototype first ran at Silverstone in 1968 without bodywork. The drivetrain for the car was a 3-litre Martin V8 driving through a Triumph TR4 gearbox with overdrive. The car weighed 1070 kg. Overall performance was good but the testing uncovered problems with the engine and its lack of road-car ancillaries. Bodywork for the first prototype was fabricated by Maurice Gomm. This car was very different in appearance from the subsequent prototypes and the production models and has been compared to an oversized Panhard CD. Neither Tastevin nor his wife were happy with the appearance of the first prototype. A second prototype chassis was built and sent to Williams & Pritchard, who produced a body for it in aluminum. The style of this body was much more angular than the first. Tastevin personally requested some last-minute changes to the shape which would be undone in later prototypes, but in general prototype #2 set the general direction for subsequent bodies. This second car was registered as a Deep Sanderson and given registration number 2 ARX.