These are what's in there, from the ZZP site, "Throttle Body Spacer Studs", not gonna work without the spacer.



I did find out they are M6 thread, so the plan is to hit the hardware store for some M6 bolts, cut the heads off and cut to length. I ordered the stock GM TB gasket from Rock Auto today. Thankfully the LIM is good, so saved myself that job. Also replacing the hoses, belts, and t-stat and doing a coolant change. May as well before it gets too cold.....no heat in this garage!