Something like this?
Or this?
Or maybe this?
21 bucks from Palmer performance. Void incorporates a built in embedding program. you also get to pick the parameters you want it to display (if your ECU supports them). You just have to come up with the gauge styles, but it's easy with the built in dashboard editor that comes with Dashcommand/PCMScan.
Doesn't get much simpler...................or cheaper.....................
Dashcommand was even written to be touchscreen freindly, so it's got huge buttons and choosable colors.
You just need to buy an ELM based interface and you're good to go..............
(no, I don't work for them, just a satisfied customer)