Exhaust Manifold replacement. 258 engine 4.2 liter (258 cubic inch) straight-6 engine  

I know I did quite a bit of work on the new exhaust manifold but actually the old manifold was a lot worse I tried fixing it first I even did some welding on it I just made it worse so I bought a new one It needs a lot of sanding to get it flat I also did a lot of rewiring under the hood and management with the vacuum hoses As well