My 2 cents, since you asked:
1. Do you want to pay $7500 more than Ford says it costs ?
2. I’d advise against purchasing a depreciating asset with an eye on holding value. Instead ask yourself does this suit my needs and wants in a vehicle?
3. Answer 2 and refer back to 1.
Personally I...
1. Hardware to mount resistor is not long enough to engage nyloc on nuts.
2. Connection for resistor leaves much to be desired given the fact that the rear tires kick water and dirt into this area.
3. Mounts are cheap and prefect alignment kind of depends on how far you thread in tail light...
Idk if one is better than the other, but the lAG version appears to be the same as multiple versions on Amazon. I believe the one I purchased was ~$45.