I just caught wind that i could not install sirius radio on my stock Nav cuz of it being made just at the time in 03 that they were doing the radio changes, so i took the alternative of putting in the FM modulator which sounds FINE!! no complaints .I mounted the( MAGNETIC ) antenna in the back where the changer is and just ran the wire under door sills and throught out the body of the truck and this was just a basic install now i just have to find a spot to install the reciver properly so its not an eye sore like a Radar detector
Any ideas for a spot? and any questions let me know! i can take pics if needed but im sure that someone can figure out how i did it just by me typing this!