I pulled the stock iron 2bbl intake manifold off of my 73 318 LA engine and found the exhaust gas crossover clogged. I used a pressure washer to blow a bunch of stuff out but am tempted to remove the plate on the bottom to get better access. The plate is attached with what looks like two large rivets that I could drill out but don't want to do something I'll regret because I don't know any better. Has anyone removed this plate before and how did you reattach it?
