getting a 2002 jeep on monday turbo diesel 2.5 ltr are they any good and what up grad to the engine are theres

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1.37 60 ft [email]6.0@113[/email] [email]9.57@141[/email] 408 glide 3550lbs
new video http://www.youtube.com/watch?feature=player_embedded&v=Xvq3ZObywQE