Valiant surgery 2. Before I cut
Wow, interesting idea.
If you are going to do this, I would recommend that you purchase a set of steel wheel tubs from Summitt or Jegs. You would then completely cut out your existing wheel tubs (to the point they are welded to the fender). You should also do the Spring Relocation at the same time...you are half way there anyway. Then you would cut the fender to the shape you want it...then you would finally weld in the tub to close off the inside of the wheel well to the fender.
You are talking about a LOT of work to match the cut out you marked on the fender in your pic. You will need to be intimate with your tape measure, your grinder and your welder... 8)
If you go this route, take lots of pics.
Thanks,
OldMoparsRule!