You can buy a gap tool/spark plug measuring tool that you use to read and/or adjust the gap.

The only thing you will need to do is just check when they come out of the box that they all are gapped properly where they should be for your engine. Just more of a double check than anything for this particular instance; to much more will just get over your head for no reason.

__________________
2006 Ford Ranger Supercab 4x4 XL. 4.0 5spd. To much to list-SOLD!

Ill be back