So the arrow headers showed up from italia to the midwest, took about 2 weeks, ordered off ebay from 'isle of man', was their name. Arrow is some nice stuff. All the parts needed are included. The springs are a nice touch, and includes a nice spring puller that will go to the tool box. Didn't need to remove the muffler, after installing the two primaries, the collector can be finagled onto the primaries and muffler together, the muffler has a rubber mount so it can be moved a little and leave the primaries loose till everything assembled. They include a packet of metallic something or other, looks like antiseize. Make sure to use it on the slip joints. The rear lower mount that uses a bolt was off and I noticed the oem piece had a slot for the nut to slide for and aft. I went to a 1/4" bolt same length and used that since I didn't want to put things in a bind and leave them ala natural. The secondary to muffler gasket stayed in the muffler after I removed the oem piece. Make sure to unfasten the connectors for the O2 sensors before you unscrew them, you don't want to be twisting the wires. Everything fit good, I'd give them a 10 out of 10. I'd guess the arrow headers weight at half the oem piece.