Does anyone know the overall ratio between the engine and driving wheels ie including the diff for all the 5 gears for the HiJet van? I jacked up my van to find out what the diff ratio is (about 1.9:1 I gather) but the gears are a whole lot more complicated to do manually. I'm planning an electric conversion and wonder if it is going to be necessary to keep the gearbox. Any info greatfully recieved. Martin Winlow.