several vendors and mostly sure several qualities and specs. I have seen them, but can't recall all the vendors
firmfeel.com mostly sure have them too in poly and solid
by the wear fact... if rubber parts got 30 years although maybe 20 were in really full good conditions, poly must be on 40-50 years life. I don't think is something to worry about
With a Charger born in Chrysler assembly plant in Valencia, Venezuela