>>777
https://en.wikipedia.org/wiki/ZSU-37#History
An effort was made to significantly increase the firepower by mounting the same 37 mm gun into a quad-mount on a T-34 medium tank chassis,
but the vehicle never left the design stage as it was recommended by the Technical Council of the Ministry of Transport
to use a newer tank chassis and the more powerful S-68 57 mm twin anti-aircraft autocannon, which was being developed at the time.

ZSU-37の後継としてT-34の車体に37mm対空砲を載せることも検討されたけど、運輸省技術委員会から新型戦車の車体により強力な57mm対空機関砲を載せることを推奨されたため設計図段階で終わってる