The GT Junior shared the Bertone coupe body and 1570 cc twin-cam engine with the standard GT but delivered a modest uplift to 109 hp and 185 km/h while trimming 20 kg from the kerb weight to 1020 kg. It was positioned as a more accessible entry point to the coupe range without sacrificing the twin-cam drivetrain. The name was later applied to the smaller-engined 1300 variants, making this 1.6-litre version the senior Junior in the lineup.