Check ebay for OHC usually run about 25-30 bucks make sure it includes wiring harness temp sensor and mounting bracket
CyberDyne makes some awesome digital gauges have to buy from Jegs JcWhitney website though
They don't show a oil gauge but I know they make one I had one of theirs in my truck
VOLT METERS
Here is what mind looked like. I got the pillar pod off eBay made by AutoMeter