Peugeot Boxer Autocruise motor home . (1 Viewer)

[Stu pid]

Hi , I have just purchased a Peugeot Boxer Pioneer 111 Autocruise, its y reg and in its life someone has changed the engine from petrol to diesel, their is low power going up hills and also high revving, the speedo shows 10 mile per hour under , could the person who changed the engine have left the original gearbox in , so the gear ratio would be out , and would it be hard changing and matching a gearbox to the diesel engine and finally would it make any difference , many thanks