4bt 72 Dart

I think they are QA1 shocks, and talking to Denny, he said that I should probably go with 400# springs.
hmm seems a tad light. the spring rates on my coil overs for my 440 are 375#. That 4B weighs substantially more. That said, I'd go with what Denny says for now, can always swap them out easily later.