My dream car is a Duesy which we all know I will never be able to have
If I had to pick a favorite engine, it would be the Lycoming supercharged I-8 Duesenburg used in 1932. 320HP that made everything else at the time including the caddy v-16 look like a joke.
Honestly though, if I ever got one of those engines I wouldn't know whether to put it in a car or hang it on the Christmas tree...