Interesting prospect. Did you see this thread?
http://forum.ih8mud.com/diesel-tech-...3b-diesel.html His experience is with the 3B, but the motors are breathern, thus comparable. Sounds like he prefers one of your candidates!
As for the above post recommending DIY, I am not so sure. From what I have been gathering, there's more to a turbo install than fitting the turbo: Turbo size, tailoring for optimization, boost levels, waste gate settings, exhaust gas temp monitoring, Injection pump tuning, exhaust alterations, ect, ect.
I think a kit will give greater control over the outcome, at least on the first attempt.
Best wishes with your turbo selection and installation! Keep us informed of your deceisions.
Rick