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

Please don't inject common sense or reason into this thread! :rofl:
so when the next young man shows up with his 318 4 door dart, says he wants to build some performance on it and has 2500... maybe 3k to spend on the engine.... is it common sense to advise buying a 340 instead??? Many here offer that advice. My question is would that get him the most performance for his money?? Talking in a 1/4 mile race. Obviously the 360 option is golden here but some still advise the 340. At todays prices, should he pay 1500 for a core 340?? Or should that 1500 buy a set of Promaxx heads for the 318 ??? I love 340's, and have owned a few. But at todays prices, I don't think they fit the bill of a low end budget.