I used the 2" exhaust wrap around my headers all the way back to mufflers and wrapped the mufflers with a heat shield blanket material that's about 1/8" thick. You can rest your hand on any part except the headers and its just warm to the touch. I ordered it all from Summit, this is the wrap part #DEI-010110 and here is the heat screen blanket part # DEI-010401 both made by DEI Engineering.