I agree with zookeeper, I'm running 5 leaf mid-eyes on mine w/Edelbrock IAS shocks
the ride is fine to me. If I recall correctly John at Opentracker recomends Grab-a-tracks for the rear as a good choice for the street.
A 69 didn't come from the factory with a 351C, only the 351W were offered. I would think that if you have the correct radiator that you would look at the 1970 hose setup as that engine was introduced in the 70 mustangs.
I would call or E-mail John at Opentracker, tell him what you would like to do with the car. He know the mustang suspension systems inside out and won't over sale you on something just to make a buck.
Opentracker Racing Products - Products Page
I use two of these on the front wheels and two straps criscrossed in the rear.
Wheel Bonnets
In the rear I also use a T-hook similar to the ones here to attach the straps to the car.
http://www.truckntow.com/c-147164-.a...
When you installed the new rear springs did you tighten the spring bolts with weight on the car or with it suspended in the air? It should be tightened with the weight on the wheels.
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