340 vs 360?

Well, for starters, these sound like used motors, so which one has the least abuse? The 360 would likely be the best, but what is the cam? The EFI is nice, but can you or know someone who can tune it? The efi would require an high pressure pump and supporting fuel lines so add that cost. Were the heads ported on either engine? The 340 would rev higher, I'd find out what Purple cam. Are either headers for an A body? What is the asking price between the two?