I have a 07 fx2 with 2 inch drop shackels on the back.I want to go lower either a 2/4 drop or a 3/5 drop. My question is if I buy the eibach 2/3 drop (coils and leafs) can I combine the leafs with my drop shackles to get either a 4 or 5 inch drop in the back. also im sittin on 24s would i have any rubbing issues?