What engine for my Wife's 70 dart

No! They MUST do a 408 Stroker! MUST. I don't care what his wife wants, or how it will be used, it's what I want! IF he doesn't do it MY way, he is a complete numbskull!!!!!!!!!
Car needs to run 10.50's or he did it wrong! Period! If his wife don't like it, divorce her. NOW!!!! Remember, EVERYONE MUST build their car to MY WANTS..... :D
How about a 318 bored and stroked to 392, then he can pick up the 392 number badges and get a wedge badge made up and throw that on the hood/fender/rear stripe and smoke the 392 hemi guys. ;)