Those were the years of odd ball engines and everyone had different engines!
1991 MP4/6 was the last V12 powered car and last ever period to win with a conventional H pattern manual gearbox.
https://www.youtube.com/watch?v=zqTtX2VxqM0
I am certain my dad has old VHS-C recordings of the 1991 Canadian Grand Prix. The classic Mansell waving to the crowd on the final lap..
I'm talking the combo V12 and manual to win a championship.The last V12 powered F1 was the 1995 Ferrari 412T2. The sound it made was pure sex.
https://www.youtube.com/watch?v=6s7hf9-IeqY