Fuel Tank Sending Unit, 1/2" High Volume Supports 450HP to 550HP, 1970-78 AMC V-8 Gremlin Only (See Note about 1978 Gremlin) - Ships in approx. 6-8 weeksP N: AMC 7011 This custom high flow fuel pump sending unit for 1970 78 AMC Gremlins supports engines producing up to 550HP at the crank. If you are making 450 to 550 horsepower, then this mod is a MUST have component for your AMC. For AMC V8 engines up to 550 horsepower Drop in replacement for factory 5 16" or 3 8" sending units A budget alternative to a fuel cell or weld on sump Recommended for cars with engines over 450 hp Recommended for all cars