Sounds like good memories and a lot of fun!
The only Tamiya kit that meets that criteria, I’m familiar with would be the 1/25 scale Tiger from 1969. It’s been re-released many times.
scalemates: tamiya 1/25 tiger-1
Box art
I built one long ago in the mid 1970’s. Working suspension, working individual link tracks, full interior plus engine - state of the art for that era. It definitely put the 1/35 kits to shame of the same time period and was way more fun to build.
Mine needs a rework…
BTW - The 1/16 scale Tiger 1 came out in 2000 or 2001.