I added bongs with plugs to both headed tubes although kits only require one.
First, great thread and posts, much appreciated!
2nd, can't help myself...
I had TTi put evac tube nipples on the collectors of my ceramic coated headers, but I've never used them,, and that was before I discovered the world's finest PCV valve from M/E Wagner. I never thought I'd need O2 sensors, but I had one installed in each side for my Innovate Motorsports DLG-1 dual wideband O2 sensor system.
Third, since you are doing a "performance build" you may want to explore the
HitMaster launch control system, which requires a hydraulic throwout bearing. I was going to get the ClutchTamer launch control product from the same company, for a regular mechanical clutch setup, but I thought a hydraulic TO bearing may help, a little, to make my 2,950 pound pressure plate a little smoother and a little easier to manage, especially in stop and go traffic, AND allow me to use the advanced features of the HitMaster.
Well I'm happy to say that what used to be a brutal clutch pedal effort is now so easy I can depress the clutch with my hand, without putting my shoulder into it!
Grant is the owner's name, and so far he has been good for tech support and advice. As soon as my car is finished, I'll start a thread on the HitMaster.
http://grannys.tripod.com/hitmaster.html