I cannot speak to your ignition system. I’m running an MSD programmable ignition box and MSD Pro Billet distributor. To run an aftermarket hood tach I needed an MSD tach adapter. I originally mounted the tach adapter under the dash during the car build only to find out the tach adapter makes an annoying buzzing sound. If you find you need to use one, do yourself a favor and mount outside of the passenger cabin. Willing to share how I hid mine on my ‘68 if interested. Just let me know.
