Includes 2 models. One is solid, and the other has a cavity meant to hold 2x 1" bearing balls (Cause thats just what I happened to have to add weight). I printed mine in PETG, at 102% scale in hopes of adjusting for shrink. The threads went on well, but the bearings have the tiniest amount of play in the cavity. So i think 100-101% should be good. Wouldn't recommend doing this in PLA cause the heat in the car will warp it.
RIP my RSX, 4.18.25. Rear ended by someone on their cellphone. Your service will be honored and you will be missed.
The author marked this model as their own original creation.