Yes! its the driveshaft holder...does anyone know the part number cuz i dont know which one in the FAQ. :D Thx for the help

at your request here they are:

12414231 - HOLDER CENTER SHAFT (FRONT) $2.49
12414249 - HOLDER CENTER SHAFT (REAR) $2.49

well, that sound is too familiar to me. btw, nice audio equipment for the recording. what kind is it? but back to the topic at hand. make sure that the back end of the car is connected to the correct holes in the bottom. with my rsx, i heard that sound because i made the chassis too long so the driveshaft wouldn't quite fully fit into the diff gear. this caused it to slip on the gears sometimes, which is what that sound is to me. the screeching sound? i have no idea what that it. but i think i just spotted that grinding noise.

I used a mic that came with my PC and SB16 wave studio

Anyways, i temporarily fixed the problem by using rubber cement on the shaft holder. I know it wont last long but its worth it for one day's run :D

BTW: I also need the name or part number of the black part where the wheel goes into. It seems the bottom of mine got grinded down and caused my suspension travel to become smaller, which made my turning radius to the left ALOT smaller and ALOT bigger to the right(Turns out suspension does matter in these little things :eek: ). I lost the screws for this and i am also wondering what the hardware kit has....the screws and such?
Thx for all the help...i greatly appreciate it :)

what black part?
the hardware kits are backordered. when they come in im gonna order one out of curosity.

The part that the wheel goes into (not the metal piece). It holds the suspension arms in the front and the tierod.

check the FAQ if you want just that but the AWD kit has it too

hmmmmmm
 

i had that problem with my skyline before I returned it, I dont know if this was already covered or what but my problem was a piece was actually missing off of the ball diff. it looked like it had just snapped off.

hope im not repeating what someone has already said....

I had a problem similar to this but mine seemed dif but ill post my fix so you can check it anyway

(this is only if you don't have AWD installed)
Take off the cover over the front and make sure that the black piece that holds the drive shaft in the right place is in correctly. mine got flipped upside down when I was working on my car and I didn't notice so it slid past that thin black thingy and popped out of the gear in the back. To tell if it is in right or not, check this. If it is in wrong, the only thing touching the drive shaft will be a thin black peice of plastic touching the end. If it is in correctly, the part touching the end of the drive shaft will be like an L shape. One part of the L holds the drive shaft from sliding further down and the other part extends down past the side of the drive shaft to hold the bushing/bearing in place. (it's likely that it got flipped after you did the bearings upgrade, if you did it)

hope this helps