The top is available in EXQB with clearance for RTU, and has 3 options for squish, no squish, and erect nips. The bottoms and shoes are sized to RTU.
This uses the original Gen3 EXQB, not any of the bibo-based recreations. There are no custom skeleton requirements, and any scaling or physics you have on non-vanilla bones will not appear. This uses the vanilla waist seam and is not compatible with anything that breaks it. The only requirement for proper display is a Gen3 or compatible skin.