Hey guys I own a JDM GK3, and the option for LED headlights was not available when I purchased the car and so I am on halogens.

I want to switch to LED lights and I've narrowed the part number down to
33100-T5A-J21 and 33100-T5A-J41.

A listing on eBay says J21 is for S package and J41 excludes S package.

Does anyone know the difference between the two and would I have any issues with wiring or mounts when installing the assemblies myself?

Many thanks in advance!