My 2007 G35 Journey sedan needs new sway bar endlinks. I was shopping around when I came across the Whiteline KLC141 heavy duty link kit for about $100 (I work in auto parts and get a discount on parts). My question is whether or not it's worth going for these upgrade parts over the OE style

 

Wouldn't hurt if its not much more expensive. I've tracked my car repeatedly with factory end links, only problem I had was one of their brackets broke in the rear but not the actual end link. That was with aftermarket coils and sway bars.

 

I heard somewhere the adjustable endlinks add a significant amount of NVH, not sure if that was just an isolated issue or comes with the territory. IMO Moog stock replacement endlinks are the way to go for the money.