A point to add about the differences between Cz and Polish engine decks:
On Cz engine decks the two big hatchs and the little rectangular hole (with mesh)(partially under the turret neck) are like Russian on engine decks one. The main difference is the big grill on the rear corner (see photos of the previous pages).
But i found that on Polish build engine deck the two big hatchs are like T54: one rectangular and one square. The little hole with mesh isn't present at the side but under the turret. There're a few other differences between Cz and Polish engine deck.

So if you want to build the croatian T55 named MARINA (Polish build) you'll have lot of work to convert the Takom Cz build engine deck to Polish one.
One of my next projects will be three T55: one from Tamiya (lot of works and add-on stuff) as Serb russian build, one Takom as croatian build (Marina) and one Miniart as russian build used by north Alliance.
So much interresting T55 projects!!!!!

Found a Polish engine deck, on Shapeways. Here is a photo and link to the description page:


https://www.shapeways.com/product/XBSCNZQQZ/1-35th-scale-polish-t-55-engine-deck

Nice find Matthew!
Thanks for the link