Agreed on doing the whole set at the same time, and definitely source it from Russ (typ4). A couple other tricks:
1. Check any new caps for molding flash on the inner portion before installing. Address with a little bit of sandpaper.
2. Lube the living snot out of the o-rings during install with petroleum jelly
3. Google 'zycam bottle IDI' for a neat trick on getting the o-rings on without nicking them
4. On mine, I didn't bother to replace the return line that attaches to the lines that run back to the tank. For a properly-installed Banks kit, this line runs from the rear-most passenger side return cap, around the front of the intake hat, and to a fitting on the backside of the driver's side head. Mistake. That line was so old and brittle that the handling I subjected it to caused it to crack and leak massively not long after. Truck ran fine; just poured out fuel. Re-did the whole job just to teach myself that hard-learned lesson.
Mike