since the first time I saw how Retail HL2 got a vr mod, i had this question in my mind. And, before you start replying, i want you to know that Yes, i am aware that the leak/beta engine is buggy af.
Going back to the subject of this post, the question is, as you read in the title, "Is it possible to develop a vr mod for the HL2 Beta?"
Again, i understand how much a developer of a mod like this, would struggle trying to make vr work into the (...broken) Beta Engine

. I also understand that the engine that was leaked in 2003 and eventually fixed by fans, still (obviousley) isn't as modern and updated as the most recent SDK of the Source Engine, Source Engine 2013.

Still, i'd like to know other's opinion on my "idea"

(which as said before, since the engine is broken and outdated, it cannot become an actual thing.)