new master cylinder ports smaller

[mopar440bbody]

hello everyone. i tracked down new MC and it is identical to old one same maker , however all of the port are 3/8 . other one had brass inverted flare fitting 7/16 i think.... male then brake line (o.d. 1/2) . so i assume i need a 3/8 male into MC with a female 1/2 od. to screw brake line. i may not be right about the brake size of tubing / end of threaded fitting, i used a bolt and hardware sizer and tread of brake line is 1/2. sorry if this is confusing. i did try to locate at Napa AZ AND oriellys.

 

[67 coronet]

did you say your old one had brass adapters in it? will the lines hook strait in with no adapters? if not, take new master and old adapters with you to get new adapters.( you will have both sizes with you that way.

 

[mopar440bbody]

after re look and more research i had only 2 to choose from both 1 inch bore universal corvette style and gm corvette style and i need the gm corvette style with 9/16 port and 1/2 port on same side not the 3/8 ports that are on all four ports. so i think i have correct part on the way now. thank you all.