P/S Pulley Question

OK, so I talked to March Performance on these pulleys and they told me the part numbers i'm giving him is for a discontinued model of pulley. He also told me they will not interchange with the new numbers and that is why the P/S pulley I just bought won't line up. So I ordered a complete pulley set from them to replace what I have.

The pulleys I have would be great for someone that is drag racing if anyone is interested.