ARE makes one specifiacally for an edge. The hump on the lid matches the hump on the hood.
If "use" is a concern, let me throw in some input. I have two ARE's and they look great, give me a little extra height(it comes into play for me) because of the hump, but they are hard to remove. I have a snug top and it doesn't have the hump, but it removes very easily. I just have to detach the two struts and take it off. You are gonna run into a situation where you need to haul a dishwasher and this removal issue will come into play. The ones that are hard to get off are also hard to get back on because you have to realign the locking handles.
If you run into a humped, easy to remove top, let me know.
2004 Ford Ranger Sonic Blue 4dr 4x4 4.0 Manual