Working on hooking up my Stewart Warner 4000 RPM tach in my Suburban - been working with Texas Instruments Electric on having a cable made plus a 90 degree box to clear my foot feed / auto transmission linkages - Texas Electric want to know if the GMC engine adapter male tang that is sticking out of adapter is removable (would make it simpler for them) - I don't want to force the tang in FEAR of breaking it and ending up SOL. Was there a AC Delco/ GMC adapter that I'm missing? Anyone else ever put one of these back together?

Thanks Cliff