Along the lines of the VDO gauges, what ohm range are the sending units. Basicalyl which one of these should I buy?
http://www.egauges.com/vdo_mult.asp?Type=Elec_Engine_Pressure&Series=Vision&Units=E
http://www.egauges.com/vdo_mult.asp?Type=Elec_Engine_Pressure&Series=Vision&Units=E