Anyone have any experience with this? https://www.autometer.com/street-dash-0-3-10-5k-rpm.html
Just glancing at the setup, looks like you could put this in a sling, it's kinda pricey though. Summit has it for $1350 and you can get $150 on mail in rebate right now, so it's tempting to get an all digital setup. I'm tempted, but not enough to pull the trigger on it, maybe later on.