Unfortunately, i think you have to remove the fenders, because the fender emblems have 2 nuts holding them on in the back and you cant get at one because the cab is in the way. I found that out AFTER I put my fenders on, so I have 3M double sided tape holding my emblems on, looks fine and they stayed on since some time last August. By the upper and lower grill moldings you mean the stainless steel right above and below the plastic grill? To start remove the grill and headlight bezels. The stainless trims have a bunch of nuts behind them holding them on. Also take the pieces off the sides first(on the fenders), they also have nuts holding them on. Any ?'s lemme know and I can get u pics.