Heat Shield Used With or Without Exhaust Gasket?
My 67 273 had the shield on only the drivers side.
Found this at
Mopar Performance Parts - A engine 273,318,340,360
A wee bit pricey but if you have to have it its only money!
340 Exhaust Manifold Heat Shield
P2946105 340 Exhaust Manifold Heat Shield — Driver’s Side. Fits 1968–70 340 Applications with HP Exhaust Manifolds 183.75