Rear LCA's with spherical bearings

Hello, I am curious to know how many miles one could expect from an LCA with spherical bearings (not the rod end type). My LCA's need replaced which I'll do next spring when my car comes out of storage. More than likely I'll just put some used stock ones back on but I would like to learn more about this type of LCA. My car is pretty much bone stock, 96 z28 at this time, I would like to put a better suspension package on my car at some point however.

We have never had any customers (F-body or Mustang) ever complain or tell us they have had to replace the spherical bearing on our non adjustable street/race non adjustable lower control arms. Keep in mind we are now shipping our street version polyurethane control arms with our Patent Pending 3 piece Polyball bushing combination. We designed these to act like a spherical bearing but be made from polyurethane.
http://www.hotpart.com/images/products/20061027013451_big.jpg
They have a very hard inner ball to eliminate the for and aft movement during acceleration with round socket cups which allow the control arm to rotate better than the factory rubber which will eliminate the bushing bind commonly found on factory and aftermarket control arms.

Thanks for the reply Brian. Do you know when you'll have these LCA's posted to your website for us to take a look at with prices? Thanks.

They are on the site for $166.40 delivered to the lower 48 states.

Red - http://www.hotpart.com/index.php?p=show&id=135

Black - http://www.hotpart.com/index.php?p=show&id=136