For those that have done it ...... is installation of an OEM underbody kit difficult? Does the kit come with all the needed hardware? What exactly has to be done?

 

Just Bolts & Cllips.....
The kit will come with every single bolts & clips....

 

The kit is complete with hardware and all.If you have a '02 TL you will have to drill holes in the bottom of the front bumper cover to attach the kit but this easy to do.When you buy the kit make sure the dealer provides the instruction as they do not come with the kit.Jens

 

I wouldn't attempt it if you only have one hand.

 

Kit installation is very simple. It would be a little easier if you had an extra hand to help hold the kit pieces in place while installijng it.