My engine is shot, or at least to me it is, per my skill level. So I'm looking to buy a new to me engine for my 2006 GT. All I'm really seeing for a reasonable price are the Series II engines, which is fine as I can install my LIM and blower and that makes it series III? I was given some advice from a trusted source on this forum about what to look for in a used engine, but wanted to get some other people's input as well. I was told to look at the oil, and to look under the valve covers to check the condition of the upper parts. I was also told that if the engine is already pulled to hook a battery up to the starter to ensure it cranks? Also to check compression. I'm very paranoid that someone will try to sell me an engine that doesn't run (if already pulled), or that something is wrong with it. I understand this is somewhat of a gamble, but am welcome to any and all suggestions / tips.
Thanks guys!