Yes they are only in this variant with polish ERAWA era bricks so Ukrainians don't need to upgrade them with their Kontakt-1
Here is only know for me photo of PT-91 in Ukraine they are full green and look like they made for them some modifications but to which extend I don't know.
https://twitter.com/nexta_tv/status/1551490434051997696
In 2016 Ukrainians have plans to join polish modernisation program of PT-91 why because this tank is still based on T-72 which the have and both tanks have many common parts probably this cooperation never happens
https://www.kyivpost.com/post/8466
but they have industrial capacity which can upgrade PT-91 with many additional devices or armour which is nearly identical like on their T-72. For exmaple their industry may use some solutions build for T-72AMT (2020) so is possible that existing variant PT-91"жорсткий"(+) but I have no any photo as for now. They are stories that PT-91 from first batch were used on Cherson direction in October/November.
