Those seats look like TMI Products Sport R (non-Mach 1 versions) - SWEET!
I think the only thing I'd do different is: get a boot for the top to complete the look! I LOVE IT! Nice job!!
I fell in love with a Mach 1 as a teenager, and that's the direction I went. But since I've been on this site, I've seen a lot of cool 'verts, and this one is right up there - Top Ten, easily. If I had it to do all over again, I might've gone the direction of a 'vert, and it would've come out looking very much like this one.