I have seen a few bench grinder that have a belt on them on is made by JET but they want a ton of money. I was wondering if anyone made an add on kit for my shop grinder.

Have you checked Eastwood? They have a lot of sanding/buffing goodies for bench grinders. Don't know for sure if they have what you are looking for but it might be worth a try.

No I already checked them.

Sears has a 2" x 42" Belt Grinder that goes on sale for $99.00. It has a 6" disk sander on one side and the belt on the other. It runs a little fast, but is relatively quiet and useful.

cool thanks that is in my price range and should do the job.

Iv been using one of these sanders for years, in fact iv had mine for 14 years now and it still works like new.

I say on in Northern Tool (http://www.northerntool.com ) for under 60 bucks. Check it out and if you git one let me know I was thinking on gitting one.

I know Snap-On sells one, I bought one for the bench grinder at my previous job. I do not recall the price.
Once you have one you will wonder how you lived without.