[Mike C]

The first gen Camaros are a trailing steering arm setup while the second gen is a leading steering arm. No way to make this work. The A bodies (Chevelle, skylark, cutlass) use the same disc brake parts as a first gen camaro, but they have the bolt on steering arms swapped side to side because they are a leading steering arm setup. It is possible to put the second gen camaro parts on the a body with a set of custom aftermarket ball joints. You can do the A body brakes (69-72) easily on a first gen by swapping the steering arms side to side. The second gen Camaro spindle is a one piece assembly with the steering arms not removeable.

The rear axle is wider than the first gen, but it is possible to swap in. I've done a couple of 8.5" posi second gen axles in first gen cars. Requires a torch to get the old brackets off, an angle finder to setup pinion angle relative to the perches, and a reasonably powerful welder to re-attach.

In other words, unless their are some other parts you can use on the car, you are better off getting a 68-74 X body (Nova, ventura, apollo) for its disc brakes and rear axle. The X body sometimes had a mult-leaf 8.5" 10 bolt that will bolt right in to a first gen Camaro. It is an excellent axle, but the 8.2 is a POS. 73-74 are the best bet for 8.5 and disc brakes. The 75 and up X bodies use second gen camaro parts.