i've seen that done before, but i've also seen it damage the filter that way depending on the hose and how its routed and if its moving.So the guy I have been working with at anderson ford said to install the barbed FITTING into the air filter itself on the front side which will be before the maf. What size hose i.d. would you recommend for the hose from oil fill pipe to can and can to barbed FITTING? Probably gonna be around 10 PSI
Also can I just leave the pcv as it is to the back of the upper intake relying on the pcv valve to close under boost or is there a better way?
stock pcv will typically work unless you start pushing hard on the boost (over 12 give or take). my car back in the day and also a friends car, both of which had freshened up shortblocks, used stock pcv setup (both making 525-550rwhp) with the exception of the home depot filter added to catch any oil mist and a check valve from a supra if my memory serves me right. having that filter catch can was handy as you can easily see if there's any junk in the line. i think we used 3/8" hose but its been long time.
on my turbo car now, low 700s to the tires, I run a 12AN from each valve cover into a catch can and a air check valve E8DZ-9A487-A as it fits a 3/4" hose perfectly.