[Jack21]

Don't use auto supply store shocks on this car. They are passenger car shocks, not sports car or street rod shocks. No NAPA or Monroe or Gabriel or K-Mart or Sears.

Ideally, use the same brand on the rear as you use on the front. Carerra is a good brand generally used on the front of these cars. Hal is another good one.

12" - 13" c/c at ride height, with 6" - 8" total travel sounds about right. I think the formula is 60% compression, 40% extension.

Either Don or DV can provide you with the right shock for this specific application. If I had this to do over, I'd try to get all my suspension, steering, and brake components from the same vendor. Bolt it together and it all works, instead of try it and see.

My experience is there are a lot of little specialty shops out there that just do front suspensions, or rear suspensions, or brakes, or steering, and few of them have ever heard of a Cobra. There is no way to determine in advance if the parts will all work together properly. You can go through 3 rear setups, and 5 front setups, and a year's worth of work before getting it right, wind up with a lot of expensive parts sitting on your shelf that won't/didn't work on your car.

Don, DV, are you listening?