sway bar end links

[nissan 350z kid]

I got my sway bars, and i installed them. I drove my car around for a little and when i would turn or i would hit a bump it makes a poping sounds. I think i need new sway bar end links but im not sure. On splparts.com it says with adjustable sway bars you need new front sway bars endlinks. if anyone knows anything please tell me. and would i need ones for the rear.

Thanks,Niko