A question for 1987 GLHS owners (but 86 owners can feel free to chime in as well): Do your heater hoses have a plastic sheathing around them? Mine has covering that looks like this http://www.ebay.com/itm/100-Ft-5-8-I...UAAOSw-itXwHwN
I would like to determine if it is factory, or added later by a previous owner.
Thank you,