Taking a poll about which drivetrain I should use

Irazor, I did ask for opinions, what I didn't ask was if everyone thinks I should just throw my duster in the garbage because it is not a hemi cuda. I don't care what anyone says, a numbers matching car in any make, model, engine type, transmission, etc, will always bring more money than a car that is not. and that is not an opinion, that is a fact.
Now back to what I came on here for. Thank you all for your input. I think I figured out what I want to do.
This is horsekaki.In todays market a #,s matching 318/904/7 1/4 will never fetch the money of the same car modified with a 340 or 360,440,426 a new trans with 8 3/4 or Dana.Also throw in an Alterkation upgrade and the value just keeps increasing.A 70 Duster 318 car is only worth $3-6000 depending on condition in todays market.This is just my opinion,which you asked for.