I used the Trim-Lok on the passenger side of my ACE with these spouts:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I installed the gutter just below the trim for the edge of the roof. It looks like that edge trim has a slot for the right king of gutter to slide in to, but I didn't see that until after I had purchased the Trim-Lok.