Simplify the following text for a Grade 13 native English-speaking person.
Original: There were also 26 of the near-identical but higher-geared Class 09 , and 171 similar locomotives fitted with different engines and transmissions ( some of which became Class 10 ) , which together brought the total number of outwardly-similar machines to 1193 .
Simplified: There were also 26 of the near-identical but higher geared Class 09 , and 171 similar locomotives fitted with different engines and transmissions ( some of which became Class 10 ) , which together brought the total number of outwardly-similar machines to 1193 .