These are AWESOME answers guys, thanks SO much. This is exactly what I'm looking for.

Towing the trailer with my 150 4.6 is do-able, but I probably get worse milage than the V-10 at the moment. People were telling me to get the 5.4, but that didn't sound right to me. The '02 5.4's only tow about 1200#'s more than the 4.6.