When I broke the switchover valve line on the back of the manifold, it was just above the banjo bolt. Took the line and the bolt off the car and used a tiny bit of superglue to hold it together enough to put a sheath of JBWeld over the area. Still holding strong.

My EGR valve is gone (used a kit from Monster Craftsman) but I still have that line to the switchover valve. Only lines I removed and/or plugged were the ones connecting to the box on top of the valve cover. Removed the box too.

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1984 300D Light Blue/Blue
2006 C280 Silver/Black