gas bbq grill
Assuming that's a natural gas line that's stubbed up in the picture, for safety's sake make sure the valve is closed where the supply line enters your property. A call to the gas company would be a good idea beforehand if you've never dealt with gas before, as they will need to close the valve, bleed the line, and relight any pilots after the work is done. As for cutting the concrete top, you can rent a concrete saw from just about any local tool rental, but you really need to have some prior experience with a concrete saw as they are heavy and can be dangerous if not used properly. For what little you have to cut there, hire a masonary guy to do it for you, it will be cheaper and safer.
Now, with all that said, you might think about modifying a grill body to fit the current opening. You can get 1", or 2" square steel tubing cut it to size, and bolt it to the grill body to where it will overlap the counter opening. If you want, you could drill and use tapcon screws to mount the steel "flanges" to the counter, but I think the weight of the grill with the additional steel would be more than enough to keep it from moving. Just some ideas to think about.
Last edited by littlecleo; 10-26-2012 at 04:35 PM.