I just got done installing a set of bassani headers. It wasnt bad at all. It was time consuming though. The truck sounds bad ass now. Some of the drone went away too. It seems to pull alot harder on the top end all the way to 5400 rpms. I think they are well worth the time and money. Thanks to Mark @ lfp for great price and service. Now I have the full bassani set up. I am going to the track tonight. Lets see if she gained anything.