~ Almost no effort. Either snap on, plug and play or decals.
	~ Simple installation with common tools. Usually under 30 minutes. Easy enough for anyone who can follow instructions. A good first project for the inexperienced.
	~ A little mechanical experience is helpful but not necessary. A good first project for those with a little more confidence. Will probably take 30-90 minutes.
	~ Mechanical experience a definite plus. Not a good first project for the inexperienced. Most likely a 2-3 hour job minimum.
	~ Only for the experienced wrench. Most likely requires good tool collection, possibly special tools and a fair amount of experience. Most people will choose to have this installed by a professional.
	Note: Body parts (hoods, spoilers, etc) are usually listed as 5 wrench due to painting requirements, not installation difficulty however professional installation is recommended.