I have an unusual situation (at least I think it's unusual). I am enclosing/finishing an attached garage, and replacing the garage door with a window. I have an 11-foot-wide U-shaped concrete block wall (16" wide blockwork on each side and 30" high blockwork in the center). I plan to construct a wood-framed wall in the center of the blockwork U to hold the window properly. I plan to put vinyl siding on the entire wall exterior, once I have the window in place. I plan to install 3/4"-thick firring strips to the block wall to hold the siding. My queston is this... When constucting the wood-framed portion of the wall, do I need to build it so that it sticks out the additional 3/4", so that the wood wall is flush with the firring strips that are on the blockwork?