I did the Uncle Tony fix with the 3-nipple filter. Took the stock 318 hard fuel line, cut it in half, flipped it so the end that was connected to the carb instead connected to the fuel pump, and vice-versa, and with a little massaging and rubber fuel hose routed it all clear of the block, with the 3-nipple filter mounted to the fenderwell by the radiator overflow tank. Fuel filter (NAPA 3040 - for late 70s AMC) in line between carb and pump.
It seems to work for me. I'd drive the car for half an hour, and everything would be fine, I'd bring it in the drive way, it'd sputter and shut off. Since I installed the 3-nipple filter, it hasn't quit on me the handful of times I've driven it. What I'm not sure of exactly is what is actually the fix - giving the fuel vapor an escape route, routing the fuel line away from the block, or using large sections of rubber hose that doesn't absorb block heat like steel line does.
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