I have a 1989 nissan 4x4 p/u with a 3.0. And the exhaust manifold bolts snapped i am wondering if anyone knows what size drill bit to use to drill them out.I was also wondering if i could go a little bigger so i could use larger studs or bolts so this does not happen again .Cuz frankly the factory studs are pretty small.

 

Did i post that in the wrong section? im pretty new at this