I'll start this review with the product itself is great. the plastic is sturdy the lenses feel quality and include a little D.O.T badge incase not having DOT lights where you live is a problem. For aftermarket housings the fitment is really good.

The product doesn't include any kind of manual, however the website does include a GTR conversion guide. While its was a little limited It did get me where I needed to go aside from the few questions that I did need to email speedzone for.

-The low beam bulbs required for this set are H7, if you go LED they will need to be a pretty shallow H7

-There are silica bead bags glued to the inside of the low beam projector housing and they're supposed to be left in there.

-If you are replacing lights in a non projector GTR the spacers that are mentioned in the guide are reusable from your OEM headlights however be very careful if you decide to go this route both in removal and installation onto the new housings.

Aside from everything I mentioned above installation was very simple, and there are guides on youtube to be able to complete installation without removing the front bumper. I do still need to adjust the beam pattern a little bit, they're set up for RHD roadway applications out of the box.

These are the best lights I have seen on a skyline. Quality is top notch and installation was a breeze! Highly recommend!