T-Bar Crank and Shackles/Shocks
 

I'm sure this has been asked before 100 times +. I looked around at other threads and cant seem to find the answer for my question. I have done a T-Bar crank and shackle lift. now it seems that the tires are dribbling like a basketball. i assume the the increase in the distance in the shocks max extension range, from area being opened by the lift is causing this. so im going to replace the shocks to resolve this issue hopefully, they need to be replaced anyway. they look factory. so i guess my question is, do i need to purchase a longer shock, to compensate for the lift, or will a quality stock legenth shock be fine?