there is a guy on a mustang forum who did a complete wire tuck on a 2013 gt500. it took MONTHS. ive seen pics in a couple different stages, and it looked great, until the final finished product. the engine bay looked absolutely naked, almost as if the engine was just floating there in the bay. IMHO do a little bit to reduce some clutter if you want, but i wouldnt tuck everything (far too much work and time and im pretty lazy hah). if you do go thru with it, solder and heat shrink tubes are a must, no twist n tape or butt connectors.