mopar crate engine

i'm looking to drop in a stroker motor in my 69 valiant, does anybody have any experience with the mopar 402 stroker? I'm also looking at blueprint engines stroker. I want something i can just drop in and run.

I know a guy that bought a Mopar Hemi crate motor and dropped it in a 72 Challenger. He just added everything it needed and fired it up. That thing is starting to twist the frame! He is getting frame rail connectors or something to strengthen the frame. He is also thinking about taking it out because he does not want it to destroy his car. LOL!