Sorry if this is the same old question for most - I recently installed Alcan 4" springs (SUA) and 4+ flip kits on my '77 FJ40 & am looking to maximize my shock travel to take advantage of the great flex. Can anyone give pros/cons on the Downey extension kit or Ford towers or ? for the front? How much can I move the rear pins in on the crossmember to extend rears / or other ideas? ??? THX