if its a tiller it has no gauges to begin with so maybe just a tacho would do Control Box $350-$500 depending onmodel 2 control cables $100 each depending on length Wiring loom $349
quintrex want $1800-$2500 for the console with a helm and cable, price varied and tbh the dealers priced acording to how much effort they wanted to go to or they just guessed it seems