I have a standard upright E93A Prefect that I am restoring as original with sidevalve 1172 engine. I would like to do a subtle gearbox conversion to 4 or even 5 speed. I have read recently of a conversion using a Reliant box but this meant the engine had to be pushed forward a few inches. Does anyone here know of a very compact modern gearbox that I could look out for. I am quite prepared to make a new bellhousing and rear bearing converter to take the torque tube but the main thing is that it must slot into the original space eventuelly. The donor box could be from a small capacity car as power transmission is minimal - 25 BHP if you are lucky. Dave
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