Welcome to Tonneau hell. I researched forever and finally got the one I am very happy with (see signature). It serves my needs very nicely.
Here are some comments for you:
The bed extender rides on the side rails near the top of the bed.
There is an extention thing you can get that will allow the extender to clear the hardware by making the extender more narrow.
I believe the trifecta requires you to flip the rails upside down to mount it. This will make using any adjustable utilitrack accessories unusable. The bed divider will not work and the extender will, but it will not be level. I had a need to use a divider so I did not get the trifecta.
From what I read, some TT members have made some modified mounting system to mount the trifecta with the utilitrack in the regular position.
On a side note: My tonneau rides on top of the bed and clamps in the utilitrack. Currently, there are adapters that slide in the utilitrack, but they have developed a new clamp that will clamp into the utilitrack without adapters. I like this since when it is off, the utilitrack will be fully functional.
hth
Here are some comments for you:
The bed extender rides on the side rails near the top of the bed.
There is an extention thing you can get that will allow the extender to clear the hardware by making the extender more narrow.
I believe the trifecta requires you to flip the rails upside down to mount it. This will make using any adjustable utilitrack accessories unusable. The bed divider will not work and the extender will, but it will not be level. I had a need to use a divider so I did not get the trifecta.
From what I read, some TT members have made some modified mounting system to mount the trifecta with the utilitrack in the regular position.
On a side note: My tonneau rides on top of the bed and clamps in the utilitrack. Currently, there are adapters that slide in the utilitrack, but they have developed a new clamp that will clamp into the utilitrack without adapters. I like this since when it is off, the utilitrack will be fully functional.
hth