There are two G-Body Chevy cluster types-the rectangular speedo and the round gauges. Your car could only have the round gauges, although you can physically screw in th rec speedo cluster and hook up your speedo cable. `84-88 Monte and El Camino that had the same options (tach or no tach, warning lights or oil, coolant, volt gauge) is the only type that will screw onto your dash and function without mods, and look right. `78-83 round clusters with the same options will fit and function, but not look correct. All others will fit with wiring mods to accomodate what they are. The only source for a stock cluster is a scrap vehicle at the junkyard or someone selling this part privately. There are aftermarket gauge panels made by people like Covan's Classics and others that will accomadate aftermarket gauges and could be the way to get exactly what you want for options. An aftermarket panel needs to be custom wired, which shouldn't be a big deal.
