I think you've seen my buddy's Z being built at Kuhnhausen Metal Concepts on Facebook.
https://www.facebook.com/KuhnhausenMetalConceptsLLC
Back in my AutoX days in the early 80's a friend was running a 240Z with a 327 transplant. It worked well all things considered.
I like 944's too but.........parts pricing vs Z? Aftermarket component selection vs Z?
From a uniqueness perspective I don't see a lot of either of them on the road or hiding elsewhere. I'd have to say I see more Z's than 944's though.
From a saleability standpoint I'd have to say the Z would win easily.