408 or gen 3 hemi

A gen3 in an a body isn’t as simple as it sounds. It’s not a simple plug and pay an an na gen3 isn’t the powerhouse everyone thinks it is without opening it up to do some mods which aren’t cheap. I would hate to see what one would cost me to go 9.40’s in my car.
Nothing is plug and play lol! I thought putting this 318 in would be easy because they came with one right… no..
If I go gen 3 it might start as a stock long block with a cam with 4150 throttle body top end, see how fast it feels. Then if it’s not good enough do a 426 stroker. Something about a new school hemi dart is cool to me. Love the lo23 cars