There was a rumour that Giulietta (tipo 116) 1.3 engine was originally intended for GTA 1300 Junior. Both those cars had oversquare engines with 67.5 mm stroke. GTA 1300 Junior engine was based on 1.6 Twin Cam modified with shorter stroke. Interstingly both 1.3 Twin Cam engines from Giulia Sprint era had 1,290 cc capacity…