Where can i get some aftermarket ones? And how much do they cost?

 

Courtesy Nissan sells them on their website, or you can get them from any Energy Suspension retailer...very easy to swap out...I have a picture of my drivers side bushing on mine...nothing pretty but worth it IMHO.

 

www.suspension.com You have to call them to order, info is on the website. Total comes to around $20 shipped depending on where you live.