I recently bought a new booster dual diaphragrm with cylinder and prop valve Where is the best place to buy brass fittings?
My prop valve will be on bottom of booster
So far I have Hit Napa home depot and advance No luck

What fittings do you need?

What fittings do you need?

A union to hook up rear brake line
to the proportioning valve Not sure what size
But its not metric I have no idea where to look??
3/8 5/16 wont work but they are std the car in question
Is a 66 chevelle with disc brakes on front drums on rear