Standard or Metric?

Trying to free the front shock bolts and the idler arm bolts. Nothing fits real well, I believe they are both 11/16, unless its metric.

Nothing fits well enough to use the force necessary to free these up.

Not so, use metric wrenchs 18mm, 17mm, or 19mm.

Picked up a set today. 18mm worked wonders, job done.

Is the whole truck metric or just parts? I had an old S-10 a few years back and it was metric under the hood.