you sure a 4-5" cowl is what you want?
I have a Maier Racing hood i got about 16 years ago.it has about a 3" cowl, anything more might look out of place IMO
I know vfn will add a scoop to the hood. Not sure if they have a cowl scoop to add. Are you set on a cowl. Like I said I bought the snorkel from usbody on sale for I think $250. It is tallerr than I wanted, but it'll work. I would have cost quit a bit more to get a shorter scoop installed. I think I've seen 3.5 inch and maybe a 4 inch tear drop.