340 has no timing tab...

flathead31coupe said
It's a different radiator than stock but it's on the passenger side period

sounds like you're in like flynn.

just be mindful of the accessories lining up.

also, if you want to change out the pulleys for say and aftermarket set up or whatever, 100% check your balancer bolt pattern before ordering. after the whole thing with your rear brakes, who knows what you might have cooking there.