We do not host ROMs here, but searching for "No-Intro ROM set" or looking for databases with "Wario Land 4 (USA) ROM" is the standard. Avoid any site that requires you to download a "downloader tool." Stick to the top 3 retro archive sites.
: Though not an N64 game, this 32-bit virtual reality title was Wario's closest historical jump to a home console during that era. wario land 64 rom