Any of the big name retailers (Summit, etc.) will have them in their gearing section. If I remember right, they are .200" thick. I don't know which is cheaper, spacer or thick gears. I have a 8.5" 10 bolt with a posi carrier that uses the spacer.
1955 5-Window First Series Chevy 1996 SVT Mystic Cobra 2010 Silverado LTZ Crew Cab
