I guess you are hedging on protecting your engine when a new 951 for 92 F-body is about $100?
There is a metric ton of diagnostic misinformation in this thread, some probably / hopefully tongue-in-cheek.
Use a UV laser thermometer, see what the temp. difference is between the top and bottom of the core.
If the bottom is significantly cooler than the top, or doesn't warm up commensurate with the engine coolant outlet temp, things are likely blocked, making it worth your while to diagnose further. Usually, removal of the lower hose lets you readily see corrosion at the lower tube ends of the core. Maybe your system had poorly maintained coolant mixture and it happened quick (in 2 years, assuming you bought it new.) Either way, you have multiple signs your radiator has some blockage. Confirm and replace. Your t-stat is easily tested with a thermometer and pan on the kitchen range.
Good thing you stopped by to clear up all the misinformation !!