Good Deal or no?

[wario26]

Ok this is the deal I have a friend that owns a wrecker service and he has a rolled over 2003 Suburban with the 5.3l in it. He is selling me the engine with harness, computer, gas pedal, brake system (brake booster, master cylinder brake pedal, brake lines), and everything that is in the gas tank and fuel lines. How much he wants you ask $650.00. Now the question is am I getting a good deal or not? Might seem like a dumb question but the only thing that has me thinking is the vehicle rolled over. Thanks for your input.