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Since The_Wizard didn't want to sell me his years ago I decided to find my own source to have one made. It completely replaces the moonroof assembly. It's made out of carbon fiber. You will have to make your own brackets and clear coat then seal the perimeter yourself. Glass replacement may be available if you'd like to keep your moonroof assembly. Should work for '00-'03 but has not been confirmed yet.
Will check back once it's finished.. Currently it's been shaved to have a 1mm gap around to allow a seal to penetrate. It's also been sanded and cleared (not pictured).. Aluminum brackets have been made to have the panel bonded to them.
My assembly almost stopped working the other day. It would not close fully and would not tilt back up into the body. I was able to force it closed but by forcing it I messed up the seal around the glass. At this point it was time for it to go.
One benefit is removing the metal frame around the glass that’s rusted out on 85% of 4th gens. That rusted frame will cause the roof to rust up near the windshield (happened on my daily). Another benefit is being able to remove at least 30 pounds off the top of the car (possibly more I’ll weigh everything once I remove it all). Last one is that in the process the drains will no longer be needed so they will be removed as well. With no water running through the drains there’s no opportunity for a clog that’ll leave your interior soaked or a leak that’ll eventually rust out your quarter panels.
This is why I will never touch my sunroof and will never attempt to open it because I'm afraid it's going to get stuck and no longer close anymore. Right now it's not leaking and closed tight.