I figure it's probably something simple like a loose valve cover gasket. I haven't messed with it much. I did tear apart the cluster and soldered it. It didn't fix the tach but I ordered a cluster on ebay for $25 from one a couple years newer that doesn't have the cold solder problem.
I figure I can make a few bucks after I fix the little things.
Find and fix supposed oil leak
fix tach (cluster replacement)
clean the interior
replace upper rad hose
replace door lock actuator(s)
adjust driver door so the 'door ajar' chime quits going off randomly
Inspect plugs, filters
I don't know what the market is like in your area Mike but, I just turned a 2004 Stratus on a deal like that where it threw the belt. Owners thought they didn't want to chance the idea of crashed valves so they sold it dirt cheap. 1 timing belt and a water pump later, I had a $2500 profit.
Unless you are really into the dirt track, that body looks mighty clean!