http://partimages.genpt.com/largeimages/231609.jpg
use a wet/dry vac or air compressor to blow the dust away and have a rag handy for wiping off stray oil or grease (for your convenience not really a need); starting with the central monster manifold connector work your way out line by line, following the old routing.
IF you have any around... consider putting silicone grease (not silicone spray, the carrier in it tends to dry out your rubber, rather the tune up boot grease for spark plugs and weatherstripping) on the rubber you're installing.
Albertj