That is awesome! I have the 3-4 bang too and hate it. Could you edit your first post or post here a complete list of what all you parts you used? Mines still holding strong but the 3-4 bang is really getting on my nerves. Lol
Upgrades are still fun but forced repairs just annoy me! I used to not mind at all but now I would rather be varmit hunting or four wheeling or something. Lol
You a mechanic? Nothing worse than being forced to work on your own stuff after working on vehicles all day! Ive been there, and had to pull it right back apart because I had a valve not seating 0_0.
I really don't think the head gaskets are your actual issue it's really hard to screw up that badly on a MLS gasket. I suspect a crackhead but I guess we'll see shortly!
I have a s300 but i imagine its real close to the same, nothing like going under a bridge or beside a jersey wall and making it rattle. Maybe I need to grow up. Lol