LOL, My 2nd Challenger had a 225 slant 6, a 904 and a 7-1/4 rear end. That thing ran very well.
Long story, cut short. I was 17 years old and driving with a friend. A highway patrol was on the side of the road with someone pulled over, trying to get another friend's Trans Am and my Challenger to pull over. Speed limit was 55, we were going 70, We PUNCHED IT to try to get away.
They came after me and 15 miles later it didn't end well. I had watched Vanishing Point too many times. Didn't know what I was thinking.
I put a 440, 727 and 8-3/4 in that car years later. That 7-1/4 was still good when it went to the dump.