I have some info on what fits and what doesn't from a 2018 to 2019.
I installed a tonneau cover from a 2018 and it fits perfectly.
I installed a bed and tailgate map from a 2018 and they fit prfectly.
Today I was supposed to get my Amp power running boards installed. They do not fit if you have a gasser. Amp says they will, and they might on a diesel, but on a gasser, there are some NVH dampers/absorbers. They cause interference and will not allow the Amp Steps to be installed. Amp is aware of the issue now and will make changes.
I'm certain there will be more issues.
I installed a tonneau cover from a 2018 and it fits perfectly.
I installed a bed and tailgate map from a 2018 and they fit prfectly.
Today I was supposed to get my Amp power running boards installed. They do not fit if you have a gasser. Amp says they will, and they might on a diesel, but on a gasser, there are some NVH dampers/absorbers. They cause interference and will not allow the Amp Steps to be installed. Amp is aware of the issue now and will make changes.
I'm certain there will be more issues.