[-=[XTC]=-Body Bagger]

use the scale of 16 units in radiant equals 1 foot in real life that should sort out the size probs
here's some info
Max step Height = 18 units
Max Jump Height = 66 units (approx)
Min Standing Height = 96 units
Min Crouching Height = 54 units (approx)
Min width = 32 units
Door Height = 128 units (give or take)
Door Width = 64 units (give or take)