Need entities and ddrace mod for 0.5.2

How to add a hook through a wall in the such entities? whether also exists mod under the such entities? who knows?
http://www.pictureshack.ru/view_45423_entities2.jpg   - entities
http://www.pictureshack.ru/view_51150_Bezymyannyi.jpg  hook through a wall

added:
or prompt as to change a Source code with mod 0.6.2 on 0.5.2.
I want to copy maps with 0.6.2 on 0.5.2