Trick Flow Intake

Well its time to start working on the car again since I got a whole load of new parts yesterday. I need to change out my injectors first, so:

Does anyone know off-hand what size are the 4 nuts and two middle bolt heads are for the upper intake? They are either 8mm or 9mm im guessing, but they are 12 point. I need to go buy a socket, but I wanna buy one so I need to know the exact size.

Don't hate me if I'm wrong but I really think they are 9mm.

Well I found the middle two were 5/16" and the outers were 3/8". I already have the new injectors in now, mass air sample tube and the new plug wires. Either tommorow or Wed. I should get the new T-Body, h-pipe and coil. I just cant wait to fire her up again. Hehehe, lol.

for anyone else needing info on bolt sizes and stuff that don't want to purchase the wrong socket... O'Reilly's I know as a fact and most likely AutoZone will do this too. They will let you buy the socket take it, try it and return it for a trade if needed to with you only paying the difference if there is one... so you don't have to worry about buying the wrong part.