Goerge a couple of questions if you dont mind?
Firstly do you have any pics of how much you had to cut away of the rear end before you fitted the new rear arches, id be interested in how you did it and how you're going to finish it off inside the wheel arches?
Also your arches seem to have the bolts that hold them on exposed, i presume you've done that incase you need to replace a wing some time in the future? (whilst racing)
I was wondering how you would blend them in if you wanted to make them look more factory?
Beautiful project mate, cant wait to see the finished thing!
Cheers buddy
Bob