51bolt: Got mine from Northern. Would not live with out them. Have a block under each axle where the spring U Bolts are this gives me another 8" height no rims or tires. Can move it around shop with ease!!! Sooo Nice to move out in center when working on it or push it out of road when I want to do something else.
Owned for about 3 years, have sledge hammered, welded, torched. Holds does not move. Mine does not have locking brake system I feel I do not need it. popcorn The Truth is Out There (Hope this Helps)
