[updated:LAST EDITED ON Nov-22-02 AT 01:39 PM (CST)]I have been researching gas tanks and I thought I would share some sites that I have found with other companies offering tanks for 60-66 pu's (no slight to all the good folks at Chevy Duty):
1.60-72 -Aluminum tank - Pricy $419 - needs separate send unit, but they have a 30 Ohms version
http://www.classicperform.com/product-pages/trucks/60-72/Aluminum-Gas-Tanks.htm
2.63 -66 Steel tank - $225 - 63 -66 pu Gas tank kit, 20 gallon steel gas tank,pickup, includes tank, mounting straps,sending unit, gasket and lock ring, 29 inches x16 inches x 13 inches, does not work with
original gauge (has 90Ohm send unit)
http://www.americanclassic.com/asp/dyncatV2.asp?which=amclsall&p1=initial&p2=Gas+Tank+Items&iyear=1966&ytype=to&exyear=
Fuel Cells which may fit ... haven't tested myself, so won't say for sure ... Do your measuring. My frame rail flange to flange is just over 16 3/4 inches. If you are lowering your truck keep the tank as flat as you can go ... A Lot of guys suggest an aluminum box around your tank unless it is aluminum or steel already and if you are really low a skid plate.
3. Fuel Cell, $96.39 - 15 gallon drag cell w/sump, 25x16.875x9.25 - Summit part # BOB-11102-1
http://store.summitracing.com/default.asp?target=search.asp%3FType%3Dbykeyword%26Part%3Dfuel%20cells%26Search.x%3D1%26SearchType%3DBoth
4. $219 - RCI Street Rod Fuel Cells - 30 in. x 9 in. x 12 in., 15 gallon capacity, aluminum, street rod style, with sender,fuel cell
RCI designed this lightweight aluminum fuel cell just for you street rodders. It features a raised, straight filler neck, a built-in GM 0-90 ohm fuel sender, and a narrow design for frame rail mounting. It holds 15 gallons of fuel and measures 30 in. x 9 in. x 12 in.