10" x 1.75" drum help

You will not be able to get 10x1.75" drums in BBP, they simply don't exist. And never existed. You can drill a new set with the BBP, that's the best you can do there.

As for the drums, check eBay. There was a link here not long ago that had them listed. Otherwise, they are EXTREMELY difficult to find. I do not believe that they are currently being reproduced. You will also not be able to find what you call the "darth-vader" drums that came on the Canadian cars. Those aren't reproduced either, and haven't been for some time. Used is the best you can do for those, if you can find a set.

***Update***

Here's the link for the guy selling the 10x1.75" drums on eBay. Not sure if they new or used/reconditioned, but here they are...

http://www.ebay.com/itm/Mopar-Rear-Brake10-x-1-3-4-5-on-4-NEW-Rear-Drums-ADD-brk-shoes-hdwe-cyls-/380695241704?pt=Motors_Car_Truck_Parts_Accessories&hash=item58a33463e8&vxp=mtr