Check out www.porterfield-brakes.com in Costa Mesa, Ca. They are well known in racing circles. They will reline your shoes with a high performance street lining. As of a couple of months ago their prices were 89.00-109.00 per axle depending on drum size.
As for drum wear, they said there will be virtually no increase, due to the fact that the linings get their performance not from being a lot more aggressive (they are slightly), but from keeping their friction capabilities when hot.
I have 2 older station wagons that I plan on upgrading after going on tours in hill country. I can still hear the screaming and smell the linings...

Actually, he IS on the internet for everyone to see. Search Inland Empire (California) for Packard.