Why not a 413 ?

The MP single plane was patterned off the big block street dominator. It’s recommended in the MP engine manual. But I know several old school folks who swear by the TM7 as if it were mentioned in scripture. One in particular that had one on an A12 road runner with 4.56 gears, a huge three barrel Holley, and a racer brown solid cam from 1971-73.