I've taken my GX everywhere. I agree it's just as capable as the 4runner. I did install a 2.5 in Ironman lift, ditched the 18 in wheels and put on my 17 in trd pro wheels. This thing is a beast. I also did the MTS and CC mod.
Did you install lockers or are you talking about the center difflock as the GX does not come with lockers in any trim.
I had a 2016 Trail 4runner, I sold it and purchased a used 2017 GX 460.
When I went in to do mine, there was a small line of people waiting to certify. A lot got the email silencershop sent out. However when some people went to certify there forms weren't ready. It was explained to me by the owner of the gun shop that Silencershop sent out emails before forms were...