TH400 High Performance 2 STAGE PAC SUPERIOR Number 20806-2 1965-UP.
Offers 2 levels of Performance: 1. Heavy Duty 2. Street and Strip
* Improves Your Automatic Transmission! * Firms up 1-2 and 2-3 shifts * Works with 6 or 7 check ball cases * Improves overall performance 1. The Posi Shift 2 Stage Pac’s are by far the easiest available way to step up transmission performance. 2. Replaces worn out separator plate with the new special design plate.