I am about to swap my 2 barrel cast iron intake on my 361 for an Edelbrock DP4B and 600 cfm carb i scored. I got my gasket kit from napa and there is only a 1 peice valley tray? do you use sealer with this or do you just torque it down and it forms a crush seal? I have never done an intake swap on a BB before so excuse my ignorance. I also would like to know the pattern to tighten the bolts and torque spec's for the intake. so if you would be so kind to go over the procedure for me that would be awesome..thank you!