FWC installed them on my Fleet. They are two 5-foot tracks on each side, just butted together. Not perfectly aligned, but close enough so the nuts can slide through. They used some kind of sticky stuff (butyl rubber tape?) beneath - about 1/8" thick and as wide as the track (maybe 1 1/4"). Sheet metal screws about every 6" hold it - probably in holes that come pre-drilled in the track. The screws go into the roof frame members, not just the aluminum skin.
Mine were a little too far forward for my solar collector install. I had to get the collectors in just the right places relative to the roof vents. I ended up cutting a 6-inch piece off the front of each track and moving it to the rear. The rubber tape came off with the pieces. I added a couple of screws on each side to hold them in place. I put screws in the exposed, unused holes at the front and sealed all the new screws liberally with 3M 4000.
You should be able to do it yourself. The hardest part will probably be figuring where the roof frame members are. Don't forget to slide the nuts into the tracks before you install the end pieces and put in enough nuts for everything you plan to attach to the tracks.
- Bernard
