Should I trade my swinger for a big block?

I know of a wicked 600 horsepower 440 motor that has been professionally built with some really good goodies.

The guy will take a partial mopar trade plus cash.

The motor was built for a max wedge type car and I would love to have something like this in the cuda although I am set up with a 273 K member right now and was planning for a killer small block.

I could do the shumacher deal I guess and I have big torsion bars.

I'm kicking around the idea and since I am having trouble with the dart, I could trade up for this motor and get the cuda going all that much sooner.

I know I would miss the dart, but the sound of a 600 horse big block would probably make me forget pretty quick huh? LOL!

Well, should I do it?