I've just finished my swap from TBI to TPI- I've been told I've got to change my VSS- but to which one? I'm running a 2.70 rear w/ 91 TPI.... I've tried a couple of sensors for that year but nothing was accomplished ( I even got wiring diagrams for 91 Fbody and changed the wiring for the speed buffer) I'm not getting any speedo action at all! Everything worked b4... Do I need a new speed buffer too? It seems they are the same...



Any help is welcomed