Thanks for letting CFou know about the update, a new WHDLoader would be awesome.
The minimum required specs may need updating as recent optimizations have improved the speed by a fair chunk, though only made a few quick tests. It should now run on any 68000 cpu (with minor slowdowns in sprite heavy areas) provided you have at least 1MB chip and some extra slow or fast ram.
If anyone has a lower spec machine, please let me know how it runs for you!