The studs I've seen are like a brass or something? The torque on these is minimal: 200 inch/lbs for intake to exhaust, and 10 ft/lb for stud nuts. Thats like a new bottle of Ketchup! Stainless will seize onto a nut, use stock stuff. When in doubt, check the FSM (what I did looking at a '65 170/225) . Remember the 1 piece gasket is engineered to OEM design as the exhaust and intake SLIDE on the gasket when they heat and expand. That's why the funky washers are used and the way the intake and exhaust bolt bosses are shaped like that. I broke off same stud at the same end but mine broke flush with the head. I ended up drilling it out and punching the remaining threads into the block as I couldnt pick them out as if they were welded in there. If I break another one, Ill use my plasma cutter to blast it out as low carbon steel melts about 150F below cast iron and itll take me about 5 seconds once I get it set up.
