Cur1ousG

We are stripping our 67 mustang coupe down to bare metal and are using pneumatic sanders to do the job. We are finding we are burning through sanding discs rather quickly and the cost is adding up fast! Any recommendations on a good website or store that these can be bought in bulk for cheap?

Also any particular recommendations on types of discs and brands to get? 3M, etc? Clean and strip discs, etc?

Thanks.