Shout out to bigdogbro....followed his 'between the ears' vent filter upgrade...worked great. I did it because i did not have a vent in my 05 at all, didn't exist. And, looking around, even on ebay, some of the primary's they are selling, don't have the vent in the back either.
Got all his parts as listed from McMaster for a total of $28. Got a Irwin drill/tap combo kit (21 drill bit and a 10-32 tap) at Lowe's for $6....and now i have my vent.
Drilled hole from inside of primary. I used a keyboard vac (well, made my wife hold it) while I was drilling to suck up all the metal shavings while drilling, I also have the rest of the inner primary covered off....
Tapped it from the trans side with an extension, didn't even need to re move my exhaust...while wife was holding little vac again....and voila...all good! Took about 30 minutes with prep time.
First pic is the 90 degree elbow, second one is the BRONZE vent at the end of the hose with adapter (I vented it to my vertical license plate)....if I want to change where I vent it, got extra hose....(have to order 25ft minimum)
Thanks BigDogBro1! :2thumbs::2thumbs::2thumbs:

Marky