I purchased these, am very happy with them.
https://www.amazon.com/gp/product/B01MRIIRYD/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B01MRIIRYD/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1

Had a led go out (just over a year of use), so i used a step drill to create hole in dust cap, put braids through the cap for better heat disapation.I tucked my heat spreader braids inside the lamp assembly, spread them out, put the dust caps back on. I checked the temperature a few times by touch they were fine after a good hour commute home. I know they suggest to drill hole in dust cap and have heat sink braids exposed. they are still working just great.