Well as the title says,  I've got a knock on my front drivers side when I go over a speed bump a bit heavy. I'm assuming that's it's the anti roll bar bush or the drop link,  I may change the drop links first then go from there.  However if it's the anti roll bar,  I've heard that these are a bit of a bigger to change as you have to undo all the sib frame or something? I'm lucky to have access to a ramp,  just looking for advice on what you guys may do and what anti roll bar would be a decent replacement on budget,  I've seen a white line roll bar on psi tuning  for 134 but would welcome any others? 
Car is a mk5 golf 140 tdi 
Thanks