Absolutely!MT Stringer said:....Then you can drill some dog holes and have a work table as a side bonus...
That top is probably an 1 1/2" thick at the perimeter only.
Add a layer of 3/4" MDF where you plan to bore the dog holes.
Then if you want to take it a step further install one of these:
You'll want to thicken your top for the vise too. Attach the 3/4 here with screws and glue but keep the screws well clear of the channel you'll rout for the vise.