This tach is neat and sensibly priced. With some though it could be mounted to the screen trim section that goes up the A post. Fit at the bottom close to the dash. That would save you drilling the dash pad if that is good with no splits. The air ratio gauge is overkill IMO. Finding the best position for the sender on the exhaust downpipe is rather hit or miss.
https://www.pepboys.com/sunpro-super...roduct/8345060