Powridah

Hey, Im replacing my rusty old stock exhaust with this. the system is off another T2 it was recently built. When I went to a few muffler shps they said they wouldnt touch the DP area. They were saying stuff about all the heat sheild's and stuff. anyway. I am going to do this at school on a hoist. is there anything that I should be replacing when im underneath there. oyea what if the bolts break ? is there some way of tapping them out ?