With OK compression numbers like that, I'd say that there's no significant damage to the motor. If you had a bent valve from the foreign object ingestion, it would have shown up as a seriously low compression reading. If it really bothers you, go ahead and rebuild the engine, but I'd just complete the work that you've already got planned then drive it as-is.

95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes