marcus760
+1y
to the rocker is like an inch and 3/4, if you traditional b.d. you probaly wont need a z,if you stock floor it the z gets built in so to speak...you can z the like 2" in either case but you probaly wont need to other than the front horns,i channeled my dually and didn't need a z just drop spindles and it lays rocker on 19.5's .on another c-10 we ze'd it 3" to lay door that was a stock floor..good luck