Besides motor mounts, if you have a 340 with the long aluminum water pump and passenger side lower radiator hose, just use 273 timing cover and timing tab, damper, water pump, pulleys and alternator bracket. You'll have room enough with that setup to run a clutch fan. You can use the later long water pump setup, but will have to change radiators or at least move the lower hose outlet to the opposite side, and you won't have room for a clutch fan.
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