If he can't go to a hardware store (Home Depot etc...), pick up a copper cap and drill a hole, he shouldn't even think of opening the hood of his car. I don't think that is the case so no need to mail him anything.

99 CSVT Green/Tan # 84 of 2760 Built on Wednesday, September 30, 1998 15.376 @ 92.00 MPH Stock 75,000Km 96 Contour GL 2.5L V6 ATX 170,000Km