if the magnum will fit with the engine cover on, i would go with it . I don't know how wide the magnum crank case is but my RCS 1.4 gas engine with rear exhaust fits perfectly on the stock 120 motor mount that comes with the U-can-do and the cover still fits over the motor with only a small hole on bottle to clear the spark plug. I would think the RCS crank case would be larger than that of the magnum 120 so it should fit fine.
Hay YNOT did you repare your U-can-do after the accident?
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