hey how you doing guys i am planing to install my oil catch can next week and i am planing to use braided na lines i got all the fittings and the catch can
and the only part i need to order is hard line tubing adapter
dose any of you guys know whats the size of the tubing on the lower plenum its circled in red

the adapter come in this sizes 5/16, 3/8, Tubing
thanks and have a great day

 

I have 3/8 silicone hose on that tube to my catch can.

 

+1

3/8"

 

thanks for the help guys ordered the adapter will be here in a week will post pics of the oil catch can setup when i am done with it