Looking at my SP3 intake, I never noticed the bosses for a plate or shield to be mounted below the PCV
Without the valley gasket, for a small baffle the only alternative was to drill through the intake and fasten from both sides! Material is so thin I didn't trust the threads I tapped, so the capscrews got loctite and nuts on the top side. Still ok after 20+ years. Devon
No, on my Stage 1 DP Intake I made a deflector similar to DaWildcat’s On the SP3 I’m using TA’s cam/ lifter baffle cover thingy, but I may make a deflector under the PCV also. I did the same as you on my Stage 1 intake, I used JB Weld, worked good!
When I put on my SP3 I made a little baffle plate and attached it to these bosses with small bolts and loctite. It's just a flat plat with 2 holes in it, I trusted that TA made those bosses a good length. I'm also running an AMP shield, but figured it wouldn't hurt anything to have both!