Surprised nobody chimed in. Usually somebody has an opinion. When I got my 67 it had multileafs (4 leaf)and had integral slapper bars with shock plates. I took the slapper bars off and went with stock 67 single leaf plates since nobody (at least at that time) made non-staggered multileaf plates. It does extend the shocks further but it works OK anyway. There is enough shock travel, at least with my stock height setup. I considered extenders but they go too far the other way.