Try using a Remflex gasket. It is a one piece gasket that takes care of both the intake and exhaust manifolds. Made of graphite it is supposed to span gaps up to 1/8 inch thick. Kind of pricey at around $35 but cheaper than machining the manifolds. Take care on installation and do not bend or it will break and be ruined. With no carbon compounds in the material it is supposed to last much longer than standard material.
Kent
P.S.You want stock number 2027. You are supposed to torque to 20 ft.lbs, with no re-torquing required.
Last edited by Lightholder's Dad; 07/22/2018 11:24 PM. Reason: Additional information
