I have a 68 mustang coupe. A couple of years ago overheated and blew a head. Very expensive matter. As you all know our older cars do not have the montoring systems available on todays cars. I scan my guages constantly but an engine can overheat and blow in 30 seconds. I am an old retired engineer and my hobby is electronics so I have been thinking about building a microprocessor based monitoring and control system for our old cars. Maybe just a basic system to alert you to look at the guages. I could easily add led lights, like green, yellow and red. OK, warning and alarm. I can also add control of multi-stage electric rad fans and even a scrolling LCD readout of oil pressure, engine temp and alternator voltage. If I could build and sell something like this for $90 to $200 or so depending on options would anyone be interested? I am for sure going to build one for myself so I thought I might as well try to sell a few. And if you have some ideas on what you would like to have included in such a gadget let me hear from you. All comments welcome.