Hemi heads for LA engines?

[goose]

I was doing some reading at Allpar recently and there was a page that mentioned that Mopar Performance makes a 4-cylinder based on the LA smallblock. Apparently MP makes a variety of heads for the engine, including a hemi head! Has anybody else heard of this? If so, will the 4-banger Hemi head fit on the V8? I know you'd need custom manifolds and probably some other stuff, but would they physically bolt onto the block?