Yes it can be done.
1)Either drill and tap your existing manifold to accept the PCV vacuum nipple or do what I did, use a Tr4A intake manifold (drill and tap at the raised boss between the carbs.
2)Obtain the following parts:
a)PCV assembly.
b)the two PCV hoses
c)the PCV mounting bracket
d)various mounting bolts, nuts, hose clamps
e)PCV vacuum nipple (or Tr4A intake manifold)
f)a pair of K&N air filter assemblies
All the above items are available from either the Roadster Factory or Moss, Tr4A intake manifolds appear in eBay often.
I looked at your setup, what is wrong with it? it looks complete.
Did you run into the same problems I did during cold weather (water, oil sludge, etc)?
As a side benefit of going over to the PCV system, the engine oil leaks decreased a LOT.....
M.
p.s.
Moss 222-955 are the K&N filters I used.