Unless you have advanced welding and fabrication abilities and a magic welder that can join steel to cast with any serious strength, making a chevelle 12 bolt work with the factory torque arm setup aint gonna happen.. Besides even if you make the housing work you are looking at $400 for a posi unit, $225 for gears, $150 for an install kit, etc.etc. All said and done you will be in the same ballpark with an inferior unit.. The moser bolt in 12 bolt is a totally different aftermarket casting it was NEVER available in a car from any factory. There were no cars with 12 bolts close to a third gen so you would have to narrow the rear and have custom axels made.. Listen man moser and strange make a great product that bolts right into your car, takes all the guesswork out, and is damn near indestructable. All in all if you dont have the money to do it right, dont do it at all.
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