Rebuild 318 or go Crate

I would be in the "build a 360" crowd too if your HP goals were say 350-375 HP. 350 is about the tradeoff point for budget/streetability for a 318. Then the 360 becomes the more obvious choice.

I leave out the 340, because they are getting scarce and IMO should be saved for restorations. But the same can be done with them, too. Plus, you will also pay much more for a 340 core than a 318 or 360. Just more food for thought.

But I am 110% behind the 318 build here and will not recommend the 360, unless you already have one layin around as a doorstop. In fact, "I" would build the teen even if I wanted around 350 HP. JMO.