It does not need a lock. The cable moves a lever to be in OD or out. The cable and internal components hold it in place.
Fred

Last edited by rfs56trk; 09/12/2013 11:23 AM.

1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine