Oh, yes - Academy M113 plastic tracks are just like this. You have to fill a hole in each link

By the way, does anyone know what the interior of Aussie fitter during Vietnam war looked like? Did they have regular benches on sides or benches in the middle as IDF version? Or maybe some completely different layout?...
I started my bucket yesterday - will build M113A3. I will use mostly Tamiya M113A2 parts, but main hull tub and suspension from Academy, as it is easier to modify it to correct A2/A3 height. It is odd that when Academy released their M113A2 (it was their first M113) they made separate suspension arms and added shocks to second road wheels, but copied all suspension dimensions from Tamiya kit - this way all their M113 kits have M113 / M113A1 suspension size-wise.
Pawel