Yup, the Gigantics were some cool bug kits, alright. No ant, though.
As I mentioned earlier, Heller does indeed make a 10/1 ant. Looks pretty good, too.
Here's a pic I found out there on the Internet:
I've seen this kit quite recently on the shelves in hobby shops here in Japan, but I didn't see the kit listed on the Net in any lists of current Heller products.
You could probably find an anthill's worth of 'em on e-Bay!