Replacemnt of old tongue box with new box/bench combo

Will2015

I have a 2015 S max. does anyone know the approximate cost of replacing the standard tongue box with the new tongue box bench combo that is available on the 2016 models?

Nomad

Are you talking about the Outback platform and box?

Will2015

Yes

Nomad

Din't know if this is for both the platform and new tub or just the platform but it's $470 according to the LG store...
http://teardropshop.com/products/t-b-aluminum-platform?variant=2600113476

Will2015

Thank you.