Taper seat plugs achieve the proper 12 lb-ft torque very quickly after hand tight - not like gasketed plugs that require another half turn or more to achieve torque.

Bottom line - get a torque wrench! Google on Harbor Freight. Get a 3/8 drive for small jobs and a 1/2" drive to bigger jobs like wheel bolts. They are not expensive.

You also need a special tool to pull the plug wires if you don't want to wreck them. I gave a Snap-On number some time ago. Search the archives.

If you're too cheap to buy proper tools, consign the job to a pro.

Duke