I installed my TWM. That c-clip was the biggest fucking bitch to get off.
Don't worry it won't break, just bend...that thing is strong as hell.
Anyways are you following the instructions on the TWM website for 2002? Really good instructions...I have 2002 as well.
Anyways I was worried about bending it...but just use an exacto knife to CAREFULLY pry it loose a little...I had to hold the knife in and then wedge in a screwdriver, then I would lightly tap on the screwdriver with a hammer to pry to loose. I eventually used two screwdrivers one on the top and one on the bottom. Just don't rush it, this took me maybe half an hour alone.
if you have TRD
doesn't the housing come with a c-clip or anything like that?
If it isn't too late...i say get TWM...it will be way more noticeable...but hey nothing wrong with TRD
good luck ...hope this helps...msg me if you got more questions