318 or 360 gasket set ?

True. its more expensive though...(why i dont know, it comes with less gaskets) just realised though that set will come with the smaller thermostat housing gasket..and wont come with the flat exhaust manifold flange to head-pipe gaskets......but, save 10 bucks, get more gaskets, and spend 50 more cents on a thermostat gasket and 5 on flange gaskets it needed......eh? eh? its your cat man skin it how you wanna!!!!

p.s.-im at work right now....thats how i know these numbers and prices and shenanigans....