Finished off the grounding under the engine by strain relieving everything.
I have an Innovate MTX-L air/fuel meter going in up in the panel, so I connected the oxygen sensor to the exhaust and ran the 18’ extension cable up to the panel.
Drilled an 1/8” hole in the cap of the coolant overflow bottle, so it can breathe, then connected it to the engine mount with extra strong zip ties, and attached the overflow hose from the top of the engine.
