i want to do the catch can setup on my b16 crx. what size fitting should i use to weld the bung on the valve cover so i can plug in my lines in there?

i need to know what size cause in summit racing they have 10 they have 6 or 8 so if you have done it post some pics of the setup you have. thanks

 

The kit from t1 Race Development uses -10 alum weld on bungs for the valve cover.

 

heres mine, i accidentaly ordered a summit -12 catch can so i said screw it and went with the -12 fittings and lines and it ended up good