Hi-po exhaust manifolds

CFD244 said
Just measure the depths of the holes and buy 5/16 course bolts of the appropriate length. Don't forget the cone washers. Save where we can!

5/16"? I thought they are 3/8" like the Fords and Chevys. The new design engines went to 8mm which is only a couple of thousandths different to 5/16". The 3/8" rarely broke the bolts like the new ones.