A couple years ago, I had a pair of Monroe Formula GP's on the back of my 86 Shelby Charger. I got really lucky to find them. I had the car stored at a friend's property. He needed to move the car and didn't have a key. They picked the car up with a tractor of some kind. When they set it down, one of the shocks bent. Took me a while to figure out why my 7,000 mile shock was locked up. After that, I drove 140 miles round trip to get a pair of used shocks from a friends GLH Omni. He was putting the coil over Koni's on his car. The used shocks were the best thing I had gotten for that car. I even think the Formula GP's were a bit high and I always heard those were the best you could get.
Good luck to you.