help !!!!!!

hi people!! don't know if this is the right place to post this am new to the forum but here goes anyway. my mates defender 110 was swaying when he takes his foot off the accelerator its had a 3"/4" lift but only had standard trailing arms so he's fitted some cranked one's today but it still seems happening any one no what else it could be thanks

usually expect that with worn bushes on your radius and trailing arms, plus a frame joints, you say he changed the trailing arms to cranked ones but what about the radius arms?
go through the suspension bushes and check for condition. lift kits can screw up the handling anyway mind.

thanks m35reo al check today when he calls round