Zaku Mine Layer
The old MSV kits of that time were said to be "the greatest Zaku masterpieces."
It's well-known that the very first Zaku kit had ankles molded as one piece with the shins and therefore couldn't move, but the kits in the Mine Layer series had improved shapes and joints.
However, even if you wanted to build such a kit, it was so popular in my local area at the time that you couldn't even find the box in model shops.
Many years have passed since then.

I've always wanted to try it. | ふっださん's Gunpla works