With the frame inserts held firmly in place, you can use a 3/8-inch drill bit to drill through the inner side of the framerails. Once that's complete, place the chassis mount and use some of the supplied hardware to hold it in place while you drill through the mount itself with the 3/8-inch drill bit. Then, remove the mount and debur all of the holes. At this time, you'll want to install the tailpipes, if you are using any. Maximum says that most DynoMax and Flowmaster kits, which follow the stock tube routing, will work, otherwise modifications to the pipes may be necessary. Install the Panhard bar chassis mount.