Original sentence: Also Brazilian, German, Spanish, Uruguayan upgraded variants.M41A3 - M41/M41A1 tanks that had their engines upgraded to M41A2 standard
Edited sentence: Also Brazilian, German, Spanish, Uruguayan upgraded variants, usually with a larger gun and/or a diesel engine.M41A3 - M41A1 tanks that had their engines upgraded to M41A2 standard.This designation also applied to earlier M41s that had their engines upgraded to the fuel injection system