Nice tachs some of you are sporting. Not trying to throw shade on anybody, but OP didn't say if he was running the original strait 6 or has a swap. How 'bout the rest of you? If you've got an engine swap, I get it.
Toyota's later factory tach is admittedly superfluous with its small face and heady 4K redline. I put a RAC tach from Pep Boys on my first car, a 1962 Chevy II, with its tiny 6 banger. The tach didn't make it go any faster, but to a testosterone leaden 16 year old it was fun to watch the needle go up and down. At mine and Miss Scarlets age anything approaching redline is a recipe for disaster. Have a nice day fellers and keep those tachs going up and down.