Seeing as you listed SBF's for all three of your choices, then the Coyote is out, That said, the prices you listed are HIGH, for $16,000 that thing better have Stack EFI. None of the engines you listed will break a T-5, these cars are just too light to be a concern until you're up in the 450 and up hp range. If you never race it, even that hp would be OK with some care. I have a 100,000 mile +, t-5 behind my 331 it still has all the parts inside the case, when I break it, I'll get the same.