I bought a TA 1235 Stage 1 intake and they tell me: "You will need to get a pcv grommet for the back of the intake, an intake manifold gasket, and we recommend manifold bolts for aluminum intake manifolds." TA 1240 GROMMET $6.95 & TA 1111-350 BOLTS $39.95 Hope that helps
I also got that stuff from TA when I bought my intake. Be sure to install the grommet and PCV valve before installing the intake. I made the mistake of doing it while it was in the car and the grommet ended up in the valley pan when I pushed it through trying to put the valve in. Needless to say it all had to come back out again to retrieve the grommet.
Dropped a set of feeler gauges in the motor while I was measuring rod side clearance. Thank god it was on the stand or it would've been a bad day.
Of course...I already installed the intake! I'll see how it goes. If it has to come back off, it has to come back off. I once dropped a small nut down inside the carb of an engine I had just installed. It made it past the throttle blades. I thought "I'll just pop off the carb and there it will be". Pop off the carb and nothing is there. I went down each intake port with a magnet and nothing. Pulled the intake...still nothing. Pulled the first head and got lucky! It made it past the valve and was laying on top of a piston. At least I only had to pull one head!! LOL