TC kits for our cars lately, have been a PITA to find pre-made. There are companies out there that are still playing around with making their initial designs even after five years of the 99 coming out. I pretty much gave up on looking for a kit due to these companies coming and going, as well as them not shipping the complete kit on the first try, second, third, fourth...
PTS was the only company I was aware of that still made a kit, but I thought they were done with.
If it were me, I'd call Proficient Performance and find out if these kits are already in their store, how they ship, and who would be handling all the missing parts you are going to be missing from the initial order. It may well be that PTS no longer accepts consumer orders and only does commercial business.
Like always, with any forced induction system, there are a ton of options and after market options that are made for these. THe key word in the ad is make
up to such and such horsepower
depending on setup. I'd call for more info on that one as well.
Let us know what you find out.