Bedford o type gearbox

[O type]

Does anyone know if I can fit a 5 speed gearbox in a Bedford o type? I presume it has the same bell housing as a tk? I would like a bit more speed. Iv changed the crown wheel and pinion but only does 35mph with hi engine revs any advice would be great  

[gwrightoy]

I fitted an overdrive from. Andy Usher. It helped on the OY which I think had a 7.4 :1 differential ratio. Message me if you want anymore info. Regards Graeme 

[O type]

Yes I’m in contact with Andy regular it’s just a bit expensive for that conversation if a 5 speed from a 214 tk would fit it might be the way to go

[gwrightoy]

Not sure but I think it's the differential that you would need to change. OB bus diff would be good.