I am rapidly moving towards my engine install. I have done quite a bit if research on the serpentine options but am a bit confused. Although the are damn sexy, I don't want to spent $1000 on a March or similar set up. I have an AC car and am still trying to figure out whether to run the Sanden compressor or stick with my stock A6. Stock hood, mechanical fan and stock shroud. Areas of help needed: What are others running and the best options? Location of compressor and alternator? I often see them swapped. I see options like get the set up off of this or that year camaro or truck, but some have smog pumps, AC/alternator swapped, often the direction is just too vague to figure out the right set up. Are there additional brackets or parts needed when pulling from another vehicle. Basically a really clear answer on an affordable straight set up. Thanks all! Great info and help on my tranny post as well as others. This site rocks!