Ginetta G4 Sports. Introduced in 1961, this attractive, fibreglass bodied model succeeded the 'G3' of 1960. The G3 had marked Ginetta Cars Ltd's arrival as a serious car constructor following the earlier 'G1 /G2' development work of the founders of the company, the four Walklett brothers of Suffolk. Available with a choice of engine/gearbox packages. Shown is Ivor Walklett at the wheel of a 'G4' in racing trim.