I have 2000 cherokee with 4.5" suspension in the rear its shackles but stock leaf springs. whenever i get flexing a little bit the stock leafs seem to be upside down like they cant handle everything . i was wondering if it would be beneficial to upgrade to aftermarket leaf springs

 

So you have 4 1/2" lift shackles? Definatley get some new leaf packs, probabaly 3.5" packs with 1" lift shackles

 

Yeah its a 4.5" shackles in the back my friends said i should (wrangler people) just thought i would make sure any good suggestions on kind of leaf springs