We have converted more 5.4L E-Series vans to 4X4 than all the others engine options combined. The 5.4L is a great option with plenty of power, even for towing reasonable loads. If towing heavy loads was the primary reason for owning, I would opt for a diesel or V10.
Our 4X4 conversion adds less than 200 pounds to a vehicle. We had a customer pick up his beautiful Steel Blue 2013 5.4L RB50 Sportsmobile yesterday with our 4X4 Long Travel Twin-Traction Beam just completed. He weighed it before and after, and reported to me a 150 pound increase.
He bought it new and built out through Sportsmobile Fresno a couple of years ago as a 2wd with ARB Locker and a Camburg lift on it. Living in Colorado and being active outdoors, he soon realized he needed 4-Wheel Drive. He wanted the handling and ride quality that only our independent suspension 4X4 system offers.
It is very rewarding to have such a happy and excited new owner. He flew in yesterday morning, was picked up by John with the van and give a full orientation, then drove back to Colorado.
I invite you to come check out Agile Off-Road and our Long Travel Dana 50 Twin-Traction Beam 4-Wheel Drive System.
Newly converted Steel Blue 2013 5.4L RB50 Sportsmobile: