I went with Mustang Racing Technologies (MRT).Cnp24 lists the website for you (mustangracing).I went with them since you get a 2003 fuel system. In other words the tank and pumps all come assembled ready to go.
SKU: MRT-1105
Product: 03 Cobra Fuel Tank System
Quantity: 1
Item price: $ 649.95 (Price in June/2003 when I ordered it)