It is the purple Vigilante. I was seeing 29xx true stall 0 boost. It was in one of Red's TSS builds that only made 4 passes before getting pulled for a stage 2 set up and a non lock ptc. I used it in my car for 1 summer and a handful of low 10 sec passes. Then it was all pulled and freshened and sold to a friend. I went to a th400. It is 6 years old I believe. It is one of the later units. The early units had a tighter clutch and would drag down the idle when put in gear, but didnt rattle as much. This is a later rattler.