318 Poly in an Early A Body?

I'm considering buying a 318 poly to put in my 64 Barracuda, along with an A727 trans. I know the heads are a bit larger, but I'm hoping there's room. Any headaches or horror stories to report?

With out a doubt it would be neat.....but alot of work and way more money.

I have a low deck Dodge Hemi and an early 392 Hemi and a Poly motor myself....but I have 340 in my early A.