the k8 engine will not work in your car without messing with the wiring harness...if he told you its a 2.5ltr v6 then it was swapped out for either the 1.8 or the 2.0...if you go look at the motor look just under the vc and look for a klo3 or a klze stamp right on the head....
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"I just drank a fifth of vodka. Dare me to drive?"
Don't take life so serious. It's not like were getting out of it alive anyway.