Ok....well there is no junkyard around here SNIP
Just to help you out there is a picknpull location under an hour drive from where you are. Same pricing as what I paid.
6241 SE 111th Avenue
Portland, OR
and again I will say, those are not guaranteed for anything but core engines sold in as is unknown running status condition , YOU PULL. so, it really isnt that "cheap" and easy to run out and grab a good running 4200 to slap in and go, as you infer. I am not trying to be an ass, but simply stating the facts that should be considered by the average joe, interested in trying this in his garage.