Digging out my 65 Barracuda from high school that has been buried in the back of my shop

413 sounds cooler than G3 hemi does, & it's lot rarer of a combo. And a lot easier to work on, no computers, no wiring changeover & associated headaches, no electric fuel pump necessary. Also "Barn Finds" are still very popular, and can be less work, upkeep, and no worries about new expensive paint damage.
Unless you just enjoy creating yourself a lot more work.