Hi the job i am about to do is replace the rusty nuts,, and studs in my Mercedes W124 M103 exhaust manifolds. I need to do this job once and for all . I went down the path of replacing the studs and the fixings with stainless steel .I need to know if i should use S/S of stick to the normal MB studs and flange nuts .Any one used S/S in to the alloy head on the forum . I know it needs thread compound on the thread going in to the alloy head .And to use copper nuts and not stainless steel .