Rattaan

Can you swap the dash gauges between the S4 and S5 for the water temperature? I know the gauges are different in the clusters, but the actual thingie that moves the pointer, could it be swapped in? I'm pretty sure the temp senders are the same between the years, so they should get the same signal right? I'm kinda thinking about pulling one from a junk yard and trying to retrofit an extra gauge cluster I have just to see. I just don't like the idea of the 3 position gauge in the car now, but I don't want to go aftermarket and mount a new gauge and all that crap. Anyone?