The block off plate is like 7 dollars shipped, go with that. JB weld is garbage. I got the oval shaped one, not the octopus looking thing above. As far as sealing up the exhaust side. I just cut the egr tube and pulled the screw fitting off and placed a nickel between it and the header and screwed it back in. Don't forget to put rtv around the hole where you took it off the intake manifold before you tighten the block off plate down or you will have a vacuum leak from hell. You can remove ALOT of stuff from an s14 intake manifold without damaging anything. EGR can go, intake manifold temp. sensor can go, all of the vacuum lines associated with the egr etc. can go, you can also remove the pcv. 4-1 system and vent it to the atmosphere. pm me if you need some help/more info. It can seem like a daunting task if you've done it before. I have like 3 vacuum lines on my intake manifold: main intake vacum port, brake booster, fuel pressure regulator, and one line for my bov. Don't mess with any of the coolant lines or you will be sorry.
