I sit corrected locomotion.

Yes, these were created by Greg Luneack out of Cali. They are the launchers or Tri-city Springs as they are commonly known. I get mixed up with all the different names to things nowadays.LOL.

He originally was in Detroit and now out West for reasons I guess have to do with the car culture out there.
He does still make 'em, but it seems that the price drives some away. I feel that they are well worth it especially since he tailor makes them with your cars ride height and type of convertor in mind among other things.
They are pretty much ready to rock with the front clamp in a specific spot that he stresses not to move at all.
Taking into consideration that he knows/races early B's, he stressed a certain spring made in house and installed big beefy front spring eye bushings to only be tightened very little to allow swing travel.