Something like this? Or Is Sunpro different?A Sun Super Tach should work, just make sure to NOT hook it up to the coil! Ask me how I know. The box should have a tach output wire.
I just recently bought a SUN SUPER TACH IILooking to get myself a cheap tachometer to use with my MSD 6AL-2 ignition box that does not nee the adapter. Anyone know of a good cheap brand that doesn't require the adapter?