if i get adjustable track bar to i still need drop broacket also how do i know what is the right length please help thanks

 

youll need the drop bracket if the trac bar has a heim joint on the end, which imo is alot better than having a tre on the end of it.
check out the link in my signature
to get the right length you just center the axle under the jeep then bolt on the trac bar so it holds it there.