The point is, you can get stuff you need from there. ZZP as well. It would take me half an hour to list all those.
Other items like pushrods and valvesprings are a little more difficult, but they're being worked on by 3 members here, and will be tested soon. Keep in mind Series 1 and LG3/LN3 pushrods are no longer available through GM. They've been discontinued. We're setting up another source for them now. Lifters can be purchased from ZZP. Just don't get the R series.
Because I've had valve float since the JET PCM raised my shiftpoints (falls flat at the top of second gear, and has for three years), and John Wikoff has the same issue with his car despite not being chipped, I'll be putting on 105# valvsprings, replacing my bad lifters, and putting in new custom pushrods (literally manufactured on Tuesday for me) soon. I have all those parts here now. Didja know stock S2 valvesprings are only 75#? But Series 1 are 80# at install height (valve closed)? Didja know we use the same valvesprings as the Grand National, but with sometimes varying install heights? Alot of work has been going on behind the scenes. One of the reasons is that a member here was shipped 135# valvesprings for his car by a vendor. That'* timing-chain breaking potential. All of this should be confirmed by February or so.
PeterG, do you have valve float at the top of second gear in perf shift mode with the Jet PCM?