As Tony says re what the donor 240 comes with, BUT from memory the 140 binnacle has bottom-edge fixing points whereas the 240 has top-edge (or the other way round!). Similarly the multi-connectors can differ, and the fitment or need for a ballast resistor. Also later 240s don't use a speedo-cable, they are electric.
Take a trip to a breakers and check a 240 to be sure.
P
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