engine swap question

[zoemayne]

00 3.4L 120K miles

I got an 00 impala coolant flooded the engine (because of the intake failing I assume) and from what I hear that job is $1200+ and alot of people i know that the car will never run the same i should just change the engine.

So im changing the engine. I found 2 different 05 engines the salvage yards say their direct fit but from what i've read the vin must have an E or whatever and the 00 impala only is a direct fit to 00-02.

My question is how can i get the 05 3.4L engine to fit. Is it a different ECU etc? The salvage yard said they can swap it for me for $450 and the engine is $650 w the the 30 day warranty. Its a newer engine so i'de rather get it instead of and 00-02.

[maxwedge]

Pretty sure the pcm programming is different, bu the interchange books used by salvage yard have all the required info as to whether and what is required for this.

[zoemayne]

the place where im buying the engine from is gonna do the job so that just makes this process a whole less complicated. if the engine is bad or it does not fit than they gotta fix it if it needs a ecu/bcm they probably have it. I just should find out if they have computers to diag the car.