Years ago I have used DEI wrap on 350's and 660's and had decent results, Make sure you get the silicone spray also with the wrap. It keeps water from it. The titanium wrap don't need to be wet before install all the others do, it makes it easier to put on. Now if you have the funds look into ceramic coating, or keracoting sorta like the new HMF black outs use. You can reach down and grab the pipe. It works awesome.