Turbo recommendations

So I am starting to collect parts for a custom project, and I wanted to know what a good turbo is for a 225 slant six. A friend of mine told me to use a turbo sized for a motor about 2/3 of what I had, with that in mind I would need a turbo sized for about a 150CI/2.4 liter sized motor. I was hoping to go a remanufactured route, ($300) instead of a new, $700, turbo.

Would a junkyard turbo be trustable? because the pt cruisers had a 2.4 turbo. Keep in mind I don't know anything about turbos, this is my first forced induction project.