Today, dollar for dollar, is the 318 faster than the 340 ???

.... And to get this thread back on track, and for those that struggle to comprehend what is being asked here, I'll keep it super simple:

A guy has a '73 Duster, 3.21 gears, 727. He says I have 3k to buy and build an engine, street car but want to hot rod it and run it at the drag way for fun. Here are the choices:
Now, which do you pick to get him his best ET in the 1/4 mile for his 3k ?

Don't like the choices? Great! Click off the thread :)