$40 mini spool and replacement gear lube But this isn't a very safe way to do a street car. Be better to go with a $350 limited slip unit.
Burn down the street,,,,then burn up the street!!!!! I'm meeting Ives today in Chicago! Will give some info on a posi,,,not a fan of spools unless strip only.
i spent a lot of money on a posi unit in my fairlane and still could not get a good burnout. had the unit rebuilt and still could not do it properly. i'd spend the money and get a new unit if possible. i'm also not a fan of mini spools on the street.