The wrap job on the downpipe looks good but the manifold I would redo. You really need to take your time and wrap it tight. If you are having trouble with using 2in I would use 1in to wrap it tighter. And paint it first then wrap it and then seal it and then bake it in the oven. Or better yet just get it ceramic coated(the best way). I wraped mine and did'nt notice any real drop in temperature.
