DST is a great mystery, there should be a lot more
DST - Dearborn Steel Tubing @MI
Carron & Co. @MI
Livernois Engineering @MI
Bill Stroppe @ CA
Watson Engineering @MI
Roush Inc. @MI
These were all used as outside engineering/fabrication/prototype contractors over the years, for performance, and regular production development programs, much like Kar Kraft, SAI & H&M were used for racing.
jim p