Magnum swap starts, does not run

Here's a video I put together of the first drive. Throttle is acting funny- kind of a stumble before it revs up. I'll have some time today to poke around a bit on it. Seems like a vacuum leak, but I'll pull codes too.

Not much traction on the snow, unfortunately.

[ame]https://youtu.be/jUb0h1yQPso[/ame]