To get any respons on the data you would need a can-bus.
Are you a senior hardware engineer and a senior software engineer espicially with embedded software?
When no, I would look into other possibilities.
I would convert the engine to take an aftermarket ecu.
I would use a Gems programmable after market ecu and a Gems programmable dashboard.
Gives you multiple pages of data, but still has the old knobs, I am afraid.
The disadvantage is that GEMS is difficult to map.
Maybe Motec is an alternative. have a look here: http://www.motec.com/products/productoverview/