OK here's my thought, You have went through a lot of work and have a great looking truck that anyone would be proud to drive down the street. You kept it with the smooth appearance which i really love. Now the addition would make it stand out in the crowd but it already does that. Would you make the louvers all the same size or taper them down after about half way going to the back? My opinion would be to leave it as is. But its your truck and your choose, What ever you decide it still is a great looking ride.
The boy (Ray) wants to know if you used the carpet?
Have a great one hope to talk to you soon