Bill, nice pictures. I'll have to agree with everyone else, maybe a little lighter on the vignette, but if your client is happy it doesn't matter. Lets all remember this is posted in the General Photography Forum not the Photo Critique Forum. Thanks for sharing your work.
As for the truck itself, I was disappointed when I saw the engine, visually I was expecting more? But if this bad boy is putting out 560 hp it's all internal.
You said a lot of cam, my guess and I'm not a Chevy man, it got a high lift cam in it somewhere around a 5:25 or better. With the high rocker covers with the spinners more than likely it's got a roller rocker assembly in it with stud griddles. I sure it also has the crack from hell in the bottom end and had been popped out 30 or 60 over.
Couple of more bucks I bet you could get close to 600hp out of this thing, but would it stay together????? The price you pay to go fast.
Sweet ride