Installing a King Quest satellite on my 2009 Big HOrn 3400RL

[billhealy]

I am trying to install a King Quest satellite (13" high and about 13# in weight) on my 2009 Bighorn 3400RL. I do have a schematic of the cabling/wiring. I have located the pre-wire cable under the roof skin about 22" to the rear of the front A/C I plan on locating the dome about 26" to the rear of the front A/C. The only question that I have is the construction of the roof. I understand that it is about 5-1/2" thick. Is there anything solid to bolt into (4 bolt holes in the satellite. My last rig was a 2008 Bighorn and the dealer in FL did the dome install. I read somewhere that the roof has a rubber top, then a vinyl piece, then thin wood, then foam, etc.

Thanks