Good to see another person go with this swap!
The 2gnt harness will work fine and the only mount you need to fab is the passenger. The oil pan can be a pain, just make sure the mounting surface is checked for flatness after it's welded.Have fun!
No, I mean filling the actual bar with some sort of material. Or remaking it out of a tubular metal with spherical bearings to mount it to the lower rad support.
What year is your Avenger? It looks like a 97+. That looks like a lip for the 1Ga Avenger (95-96).
You can tell because they moved the license plate from the trunk lid (1Ga) to the bumper (1Gb). A 1Gb lip would have a cut-out for the plate.
Nothing a little dremeling can't fix.
I think it's great. Maybe a tad overkill though on the size. Have you seen the front lower triangulated bar from D3 Designs? Have you thought about re-creating that one also and maybe offering it as a combo deal?
And a little off topic, but I have thought about filling the "North/South" bar...
Do you have any pictures? There is only 1 complete rear bumper replacement for the Avenger that I know of. All others are lips that are attached in some way.
I'm running a 255/35/18 Yokohama S-Drive on Evo X 18x8.5 +38 on a 500# front spring and im pretty low on "stock" camber. To not rub, I had a local fender roller not only roll the fender but also push the fender just slightly out giving a bit more room. The tire just barely misses the fender...