now that it is morning and we worked to 11:00 pm on this, the wrap is because the fuel pump and filter is there, and we don't want any heat going to that point Hector told me he was going to wrap all the ones he sells with that wrap,, beleave me this was a ***** to build. I got to the shop at 10:30 am and 11 1/2 hours we finished ,, we did spend about 3 hours building a duel 3" intake that too is not finished when winished ,i will post pic and yes Hector (exhaust depot.com) will be selling that also. will keep you informed. jim