I expect the motor base would cope but I don't know if you would ne that much. For developing ordinary film, most people use about 100ml - and that is a lot more than is actually needed.
They were actually designed for 8x10 colour paper but do very well with 8x10 and 5x4 film.
EDIT: I see what you mean now. You want to modify it to take a normal tray. I think it would be o.k. if you could keep the centre of gravity as low as possible.