When i put my 00 EX (5-spd) in reverse and back up, there's this mechanical clunking noise untill I take it out of reverse or when the car stops rolling. It's more of a "clack clack clack" than a "clunk" but I don't know how to expain it, haha. Anyways, any ideas? Thanks

 

Might be your brake pads. One of our racecars does that when we roll it backwards (it doesn't have a reverse gear)..
Is it wheel speed dependent or engine RPM dependent?

 

Wheel speed dependent, and only in reverse

 

Does it change when you turn your wheels while backing up?

 

Im sure you checked axles right?

 

doesn't matter what direction my wheels are turned, just makes the sound when I'm rolling backwards. The car is driving fine, I can't figure this out!!!

 

Interesting. Grab a friend to walk next to the car and narrow down the location more.