Converting your swing axle pan to the more modern Independent Rear Suspension (I.R.S) is now easier then ever.  After removing your existing transmission and spring plates these two jigs do the work for you.  Bolt them onto your torsion tube and it's very hard to go wrong when welding in the conversion clips.

Rent it for $25.00 (1 week) along with a fully refundable damage deposit of $200.00.