No regrets on my mods - see garage. Next are the headers and catback system and JTSVP coil and wires. I thought about not doing the headers myself after taking a close look underneath. BUT someone's quote in their sig keeps going through my mind - its something like, "always try to do what you thing is impossible". I know I can do it with enough time; I just got intimidated. I am definitely going to do it myself because of the pride afterwards!
Get a torch for the header to mid pipe bolts. They are a bitch!