- Different formats avaiable (max, obj, fbx, 3ds) - Correctly scaled accurate representation of the original object, no additional work needed.
Present with texture is also decimated version of original hi poly mesh of few milion polygons. The present decimated version has around 50 000 polygons (tris).
If you need just the original mesh without using displacement map during rendering, take the low poly version, subdivide it a couple of times and use the displacement map in 'displace' modifier (in 3ds max) or similiar in other applications, which will deform your mesh in viewport realtime, so you get the original hipoly mesh. You can us it, or use it as proxy or decimated it etc.
Obj, dae, fbx, 3ds format are maximally optimized to allow correct import (if you use these formats).