Have you considered super stock springs? They work great on my Dart and a lot cheaper than a caltrac set up. My 60 ft has been in the 1.50s which would put you far into the the 6s 1/8th mile.
That's a very good idea. I guess I could try them and if they don't work, sell. What shocks do you run with yours? I'm currently using the Competition Engineering 3 ways.