my 86 has like the worst gauges that came out in the 82-92 camaro. It has the big speedo, and fuel gauge, and the rest are just the warning type gauge that only light up when something is wrong (overheating, low/no power) how hard would it be to swap out into a 91-92 set? with the big speedo and tach. my 86 is an auto. right now and doesn't have a tach. gauge in it.