oldmate wrote:The body lift alone won't cause handling problems like that. If the car is actually steering left and right of the bumps it's probably a worn steering component such as tie rod ends, bent links (throwing out the alignment).
It depends on how it's done. Looking at the pic showing the leaning tower of front body lift, it looks like he's used a series of flexible bushes. During weight transfer it's possible the blocks under compression compress to the point that the bolt is no longer under tension. It would be hard to predict the outcome.
oldmate wrote:If its a rocking left right, as if you're in a riot and people are trying to overturn your car, I would probably look at the sway/stabiliser bars. It's possible they were removed all together (pointless with IFS) or the bushes are really flogged out.
What makes you say this?
I removed my rear sway bar years ago, and had my IFS Paj engineered without it. Passed the handling test with flying colours - 2" body lift, 2" suspension lift, large tyres and no rear sway bar. It also performs much better off-road, as the rear flexes significantly better, so it can keep 4 tyres on the ground for longer.
I'm very happy that I removed my rear sway bar, and there is no way that I would consider the modification pointless. So I'd like to know what leads you to your opinion.