Here is what you are going to need to know to complete this procedure. Feel free to contact me with any quesitons or problems! Good luck!
Notice: Do not bend the fuel tank straps. Bending the fuel tank straps may damage the straps.
Caution: Drain the fuel from the fuel sender assembly into an approved container in order to reduce the risk of fire and personal injury. Never store the fuel in an open container.
Important: The fuel pump strainer must be in a horizontal position when the fuel sender is installed in the tank. When installing the fuel sender assembly, assure that the fuel pump strainer does not block full travel of the float arm.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Tighten Tighten the hose clamps to 2.5 N·m (22 lb in).
Tighten Tighten the bolts to 40 N·m (30 lb ft).
Sorry I did not see that in your additional info until now. I am pretty sure the pumbing is different between the flex and the standard fuel system. I would imagine that this would not work. I cannot honestly say that it won't but I am pretty sure there is a difference.