The Facet pump can be used with either positive or negative ground; what about the Airtex?
The Facet that Bill show's is polarity sensitive and is a quiet one. I had one and forgot that I had one car still positive ground. One click is all I got!! Check Airtex sales lit but I believe they are not polarity sensitive. The Facet can shaped pump that Blue max showed is probably the most reliable pump that you can buy with a Filter built in. I believe his is upside down in the picture. The filter twist's off the bottom. That pump is the old Bendix made pump that I got used from a friend in the 60's to put on my MGB. A friend still is driving that car with well over 150K and the pump is still going strong.