Randy,
Pretty much, I'm going to put a 2" tape line around the cowl and cut so I have a good sized flange to bond the cowl to the hood. I'm going to reuse the pieces I cut off to add structure to the cowl. As for how far forward, im not sure yet. Since the cowl is 4" tall at the back, I need to do some testing with opening the hood to see how far back I can go without hitting the windshield. I'm guessing it's going to start about 2" ahead of the factory hood bump.