Kitchen help! New sink base because two cabinets are missing?

[Gabe Sirkin]

Hello all,

We bought a property in as is condition. The kitchen cabinet sink base, was missing two drawers. The whole base is completely hallow, so I cannot anchor new drawer slides on the slide wall. Do i really need to buy a whole new sink base over two missing drawers?

Please see some pictures below and let me know your thoughts. It just seems so silly