That is a great question, i have the same issue going on. I tucked my cage up to the roof as close a i could, i was told by all the off road guys that build the full cage trucks that they glue the hearliner in and wrap it around the cage and it looks real clean. I dont have any pics, nor have i seen it done, but i hope when i get to that point in my build it all comes together. Good luck, hopefully someone will show us some picts