I'm in the market for an A340F trani. I was woundering if there is any differences between the A340F's from the various models they were used in. I know the model of vehicals they were used in. But is there like electrical component differances that need to be pulled off the donener or is it a straight swap? Any advice would be greatly appreciated. My Toyota is a 99 4runner SR5 V6 4x4.