Just a little background... The oil pans fabricated with drain plug, windage and pickup trough, also have removable trash screens which is handy. They're also an o-ring seal. We have aa nice gasket that some may use as well.
The pumps are peterson R4 and are under-driven of course. It's a "twisted lobe" roots design. A bit like a supercharger rotor. I believe Peterson has a patent on that: More flow, less heat, less air, type of deal. They're the experts. We used the Aviad pumps on the original p-type YEARS ago, but that were finicky. We've done about 15 of these setups with the "peter pump" and have been real happy with the results.
We're happy to furnish the plumbing and if use our tank, we have the lengths reasonably well sorted if you install the way we do it. Nothing is socketed, as we do all crimped BMRS hoses as you see in the pics.
The Tank is peterson as well. The tanks are customized by us. We went through a few iterations to get happy with the oil control. We never had issues with pressure loss at the pick-up, but fine tuning the catch can venting was more art than science at some level. Peterson is known for the best tanks in the industry. Even they admit that many of their builders take their already great designs and improve them to suit the application. We have standard bracketing for "bolt" installation of the tank. It works with the stock firewall and fuel filler as well. The drain is convenient and easy as we drop a hose from the bottom and cap it. We do the same on the remote catch can. We tried the piggyback catch cans and a few iterations of it. Never was happy until we divorced the two.
About 2/3s of the kits are on sequential trans and the other 1/3 on syncro boxes for customers who like cool stuff. I believe they're required on sequentials for any motor life.
Back when the 2ZZ was in World Challenge our kit was there, the Willzig 211 has it, obviously my TT monster has it, both the Zust race cars (Optima and XP), and several others who are pushing things beyond reason!