This is nothing new there is a tool for putting these in but most guys just use a pipe wrench and it is not tight enough. I use a special socket Mac tools part number is SC 29 and my impact because if there not tight enough when the spindle is turned it unscrews them and then beats the hell out of the a arm. I like the style that bolts in with the four bolts way better but that's not what comes with the kit it, seals way better. You are going to have to check the treads out real good and if there ok put it back together the right way maybe even some lock tight to be sure it will not back out again. If you need more help don't hesitate to call me I deal with mostly A&C cars and think I have seen it all LOL 1-585-786-0808
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