Outer Limits 4x4 Board

i have a 60 series with a 3 inch ironman lift. and my shackles are worn out.
was just wondering if i bought a set of extended shackles and took a leaf out of each corner would i have to buy new shocks aswell.
i dont really want to as i just bought new ironman foam cell 2-3 inch shocks not to long ago.
thanks guys

No your shocks should be fine mate, but you will probably get more flex out of longer ones.