Doing a search most everything I found was 4 an. I Wil be running the drain into the upper pan next to the starter.
what welds? the one on the hot pipe by the fire wall? nobody see's that so I dont see the point in spending a whole lot of time grinding it down.tig welds should be ground down lol, just giving you crap it's nice to see people attempt truck stuff on their own, you can say you built it.
Question for you lb7 twin guys. Boost increase valve or no? I feel like it should come out with my all stock engine.