Checked the Pontiac 22P manual for the parts you would need, did not find the individual parts listed that you will need. I did find fuel block kit, which includes the fuel block, fuel block seal, and screws (did not list which screws). You could check with a dealer, an they may have more details, and if the kit is still in stock. p/n 17110853, the part is still listed at Monster Parts.
Option two is a trip to pick-U-part.
Here's a recent thread about the fuel block seal : //www.fiero.nl/forum/Forum2/HTML/090145.html
As a guess for the missing bolt- size of 6mm x 1.0mm threads, length maybe 25 or 30mm ?
Maybe someone else has a V6 intake on their workbench and can check the size.
[This message has been edited by StockGT (edited 04-07-2008).]