Martin's Lilley's tenure at TVR was first marked by the new Vixen and Tuscan models exhibited at Earls Court 1967, although their styling was little changed from the Grantura Series IV. TVR chose the Ford Kent 1599cc Cortina GT engine was extra tuning to almost match the power of the MGB-engined Grantura which the Vixen replaced. Although the Vixen was launched with the MGB engine only 12 were made before the Series II came out with the Cortina engine and a longer wheelbase. S2 Vixens had small scoops in the bonnet and Cortina MkII tail lamps. Series III Vixens were given alloy wheels and aeroflow vents by the wheel arch from the Zodiac MkIV in 1970. The S4 was launched in 1972 and now had 92bhp from its Capri-tuned engine, and production ended in 1973 after 743 were sold. At the end there was a very small number of 'Vixen 1300' cars made with Triumph 1296cc engine, and the last few of these had M-series bodywork and could perhaps have been called 'TVR 1300M'. 385 Vixen 2500 were built, precursor of the TVR 2500M, using the Triumph 2.5-litre 105bhp engine, and the last of these were built on the M-series chassis. TVR also built a V8-engined Vixen, named the 'TVR Tuscan', using the Vixen S2 body and Cobra 289 cu.in. Ford V8, which was followed by a wider 302 cu.in version. A Tuscan V6 was launched in 1969 for European sales with the Ford Essex 3-litre V6 engine.