[Motorhead6]

K-D Tools P/N 2125 is a kit that includes a combination reamer/tap and 4 different length inserts to repair your stripped out spark plug holes. PermaPlug P/N 2214N is a set of 2 each 1/2" long inserts and Plews P/N 72-249 is a set of 2 inserts 3/4" long. All of the repair inserts are 14mm have a shoulder made onto them so that once inserted and thread locking is used, they will not back out when you remove the plugs at a later date. Any automotive supplier will be able to get these or an alternative manufacturer equivalent. If you prefer the 18mm plugs, I know that they are also available, just don't have any on hand and therefore do not know the P/Ns.

If you are at all handy, these parts are very easy to use successfully, jsut be sure to kept the reamer/tap perpendicular to the thread. An alternative to investing in these tools (not too expensive) would be to take them to any automotive machine shop and the cost should not be too high.