What sending units did you use?

Actually, what I was looking for was more along the lines of:
Will sending units from the Gen 3 hemis register on old analog gagues or do you have to put sending units from a motor intended for an A body into the Gen 3 motor? I am not aware if the wires from the sending units pass through the modern ECU first or if they just go directly to the gauge like in the old days. Obviously the crank and cam sensors have to be the new stuff since they didn't exist back then, but I want my old water and oil pressure gauges to work.

I should mention that this is a carburetor car, no EFI, no ECU, just 6-Hemi running the spark plugs.