I'm in the middle of my own TBI to TPI swap and I need this question answered. Is the VSS sensor on my '90 Formula the same for both TBI and TPI? The harness connector plugged right into the sensor which makes me think it will work but I'm not sure. Can anyone give me a definite answer? It's a '90 TBI Formula switching to a '91 SD TPI just so the specs are out there.