Dan. There are a lot of these engines in the 35-45K range. The question you have to ask on a 2-4 year old engine with a claimed 15-20K is how long has it been sitting and corroding internally. I'd much rather have a 50K fresh engine than a 10K one that has been parked for 2-3 years... plus it's gonna be a lot cheaper. These are 200K engines as you know, so longevity is not really an issue.
Just an opinion from an OLD guy who has been around cars for a LONG time.
+1 Valid point...which would force me to agree with...gulp...Jeff on this one.

