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I have a dealer demo kind of loaded 59k 80 Dippy coupe i intend to put a magnum headed early 318 w A500. im wondering what my best rear option is. eliminate iso-ride?



Find a fleet model (cop car) and grab the 8.25" rear axle. You can nab the rear sway bar while you are there too. The axles came in two ratios: 2.24 and 2.94. I would stay away from the numerical lower of the two since you need to change the carrier if you want to higher.

Depending on if you want to ditch the ISO setup will determine how the sway bar will attach. The factory method has the end-links mounting to the shock plates. If you replace the plates with B body ones you'll need adapters from Firm Feel.

I ran with the ISO setup for a number of years and finally ditched it a couple seasons ago. It made a pretty noticeable difference with brand new five leaf springs and Edelbrock IAS shocks. I would certainly do it again.

1987 Fifth Avenue - 512/518/D60