the stock cables won't be long enough to reach either side but i don't see why you couldn't modify them
you'd need to start with the throttle and choke cables as the vent cables won't dash mount to well
then add the vent cables to the existing dash cables to make them longer
no way to add on to either cable or housing, you'll need to make a splice block
start the mockup by clamping the housing to a board and clamp both cables together
once you get a plan from the mockup make the final version from steel
clamp cables together with something like this from
orielleys
just drill out the hole to accept both wires
clamp the housing down with
something like this