The kitchen was built by the previous owner. The gas grill is completely rusted out and discontinued (no parts available). I would like to replace it with a smaller grill which better fits my needs, plus new similar sized grills are about $3000 . This one has a cinder block frame with flagstone on top. I do not see any vents or gas shutoff. Ideally I would like to modify the cutout and install a smaller grill and perhaps add access doors and ventilation. Will this be possible or do I have to demo this one and get a new kitchen to accommodate a smaller grill ?