No, this does not increase your capacity. It will make the truck easier to drive while pulling. Having the truck balanced right is very important.

Wannabe

I would have never considered hooking up even 75% of the Ex's rated towing weight to it stock. Much more stable on the road now.

Towing capacity encompasses many elements- the load rating of the tire/wheel/axle and spring combination, the brake system capability and the strength of the driveline are just a few elements. Adding airbags, bigger springs, higher rated tires/wheels, stronger driveline components, etc will usually make for a better towing experience but no modification you do will legally increase the towing capacity of your vehicle. The weitht specified on the build tag is what it will always be- by US DOT regulation. This applies to passenger and commercial vehicle. The only exception is when the chassis manufacturer designates the vehicle as incomplete- the body manufacturer then attaches the supplemental tag to the chassis. An example would be an RV manufacturer.

My pleasure. Beau got me halfway there with figuring out what would work and supplying the part numbers.

I neglected to mention that I replaced the stock POS damper with an aftermarket dual-cylinder unit. It cost less than an OEM replacement single unit from Ford.

Every piece of what I did added a bit of improvement but everything together didn't do what the spring swap did.