Dennis
We can make anything complicated.
I have lm2 use rpm (easy to install)just splice into your tach wire and plug into MSD box.
I have a single channel unit, I have bungs in both sides so I can check both banks of engine.

I like it! I added a SSI4 so I can do driveshaft rpm, water temp.
Knowledge is power!

Most problems with innovate products are self inflicted.
Follow wiring, grounding instructions.

I have found innovate tech to be very helpful. I have had mine for 10 + years.
Don