Here's the finished installation with the Deist harness in place of the stock seatbelts. In a racing-seat installation, Deist recommends that the lapbelts be anchored approximately 2 1/2 inches forward of the point where the lower seat and backrest intersect. The Chevy's stock mounting points, which we used, are farther back. In this setup, either set of belts can be used without interfering with the other. However, seatbelt rules vary depending on the type and class of competition and the type of 4x4. Be sure to check the rules for both your particular class and your 4x4 before installation.