The Pro-Lok LT300 Keycheck was designed for this exact reason

2001-Mercury-Sable

1978-Pontiac-Grand Prix

2003-Infiniti-G35 4 Door

This kit has an assortment of tailpieces for standard mortise cylinders

General Motors 3 Button Remote Keyless Entry (3B5) - By Ilco 1985-Eagle-Eagle The Pro-Lok LT300 Keycheck wasThis high quality GM 3 Button Remote Keyless Entry (3B5) by Ilco is designed for precision key cutting and duplication. Perfect for locksmiths and individuals needing specific key blanks, its reliable and easy to use features make it an essential tool for locksmith services. Get the best results with this key blank that is suitable for all your key duplication needs.