The ebay kits are a waste of time and money. .
I must just live a charmed life.. 3 years and 60K on a non Bosch CPS.. 3 years on a "cheap Ebay kit" on my coupe.. and a year in the wife's car. "BEST" in lighting.. probably not.. "respectable upgrade to stock?".. by all means. And for the price difference.. I can replace them 4 more times..
Just food for thought..