I've been battling for the last 3 years a DCOE that a PO had put on the B and lately haven't been able to solve a fuel drip coming from the carb to manifold junction. Looking at the bottom of the weber there was a line of JB weld which suggests an earlier crack repair. Anyway, it was either get another weber or switch to the stock su's. Since I had a set of su's on the parts car of unknown condition I decided to at least give them a try and see what would happen... nothing to lose. A few weeks later and I've got a set up that works. The su's wouldn't tune with the crankcase breather line hooked up to the carbs so I vented it like an early B down the side of the block and out underneath. Adjusted the timing to about 20 btdc and bought some KN filters. Today I'll drive the car with the filters for the first time to see how she runs on the road.