LS3 Crate Motor PCV

[MIKESAD50]

I'm trying to find a factory routing for the LS3 crate motor. has the plastic pipe from valley cover to Intake manifold. Came with a plug on the fitting on rear of left side valve cover and a fitting that was open on the front of the right valve cover.

My thinking from reading is that all is need to hook up hose from fitting on the right valve cover to the air intake pipe after the AMM. Is this correct?
Would just a filter to filter the fresh air into the motor be ok and not effect the fuel system as in cause fuel trim issues?

I find a million different routing diagrams by googling.

Thanks for any information and diagrams