I have one in my 72 dodge charger se, it had sat for 11 years. it took 4 cranks perfor it started up and purrrrrrrrrred like a kitten. no smoke or nothing and that was with 160,000mi on it. i've redone all of it now but it still g oes to show the quality of the engine. i say go for it. i love my 318.
not too mention aftermarket availability for these is growing quickly,
bor it 30 over adn toss some 340 heads on it and you could have a monster