Very nice job on the vents! Do you know how long and tall they are? I have looked online for fender vents and I like the look of these from Street Scene, but I'm not sure they'll fit the vertical radius of the fender.
http://www.summitracing.com/parts/SSE-950-73000View attachment 76485
I did a quick Photoshop job to see what these vents would look like in place, but totally had to guess at the size of them relative to the fender.
It looks like your vents are flexible enough to curve to fit the fender?