I have a 33avs twin step with 675hp and have a chance to get some wilson blueprinted 2in shorties what is the benifits if any?

You would most likely have to run 5 or 6 blade props that are big $ and are hard on the drives. Other than that I cannot say anything other than they will look bad ass.

I run 2" sportsmasters on boxes. I have heard they are hard to get on plane without the boxes but never tested. The boxes put me 12" back and 1" down so with -2" lowers I am only up 1" and the boat wants alot of trim. Since you are currently stock can you tell me how far below the bottom your prop shaft currently is? I am now at 4" below. I am making 750hp @ 5600 rpm but only getting 92 @ 5100 right now. What ratio are your drives?