Don - FlowKooler used to sell a separate ring that you could add to your existing pump impeller similar to what is on that SVT pump. I don't think it's still available, but it was attached using SS pop rivets. I had this little device on a water pump that was used on a 351W for a good many years with no problems ever - and it actually seemed to help the cooling. You might consider drilling and adding some SS pop rivets to back up those lousy spot welds if it's at all possible. Since this was befor digital cameras, I probably don't have any photos