Id like to see how you mounted your monster tach in your 70-up a-body

well i don't have a pic but you know those things that hold the seatbelt shoulder harness that are screwed into place under the mount for the sunvisers?I modifyed one of those to mount my monster tach to.the tach is right there to bee seen while driving and the visor still folds down,the wireing for it tucks under the windshield gasket out of site...I'll try to get pic's tomorrow.