Which engine?

I'm looking at my 68 Barracuda and having a problem on which engine I should put under the hood.
I have a good 360 that I could rebuild and drop in.
I couuld take the 360 and stoke it to a 408 and use that
OR I could go with a new Hemi. Either a 5.7 or a 6.1l
Which way should I go.
Original engine is long gone and it's been converted over to a 4sp so a manual will go back in.