Anyone know of a good Montero mechanic in Southern Maryland or DC area?

I have a bad coolant leak. Looks like its from the coolant bypass pipe that runs from the water pump to the back of engine. It might be from the o-ring.

Been having my mechanic taking care of my Monty but i can trust him anymore.

I have a 2003 Montero (not sport) and about 180k miles. Its been sitting for about 5 months. I would try to fix it myself but just dont have time.

TIA!!!