Brake Flare Fitting - Part Number Request Options

[9146C]

I've run into an issue with my brake re-assembly:

When I first bought my car (almost 20 years ago), I installed a set of stainless steel brake hoses at the same time I installed new calipers.

At the time, I do recall that these SS hoses were not DOT approved. Never had an issue in the time I drove them.

For my re-assembly, I've ordered new (DOT approved) SS brake hoses. When I went to install the new hoses, I found that the flare fittings that I have (that have been on the car the last 20 years) fit very loose onto the threads of the replacement hoses.

I initially assumed that the replacement SS hoses may have been manufactured with SAE fittings.

The Parts House informed me that the brake system was changed mid-year 1972...mine rolled down the assembly line in March of that year.

I knew that the front calipers and strut offset were changed late 1972, but, didn't know (and haven't read anything) that the brake lines/fittings were also changed that year.

I went and ordered a set of early (1970/71) FTE Brand rubber hoses. Those just arrived and I'm finding the same loose fit as I found with the replacement SS hoses.

Now that I've tested with two sets of replacement hoses (which are identical fits, btw), I'm starting to think that I must have changed the flare fitting to a metric/SAE adapter when I initially installed my original SS hoses. I don't recall that I did.

I've tried to locate a part number from the Porsche Diagrams...this flare fitting appears to be missing/unlisted from the parts diagram.

Question 1: Does anyone have a part number for the correct flare fitting? (Or a description of the male flare end...I realize the female end is a 10mmx1.0.)

Question 2: Can anyone confirm that the flare fitting was changed mid-year...are there 2 different part numbers for this flare fitting?

Unfortunately, I cannot attach an mp4 file to demonstrate what I'm trying to describe...the first photo is one of the eight flare fittings I have currently...the second photo illustrates what the fit looks like as the flare fitting is snugged up to the replacement FTE (early) rubber hose.

I'm thinking I must have the wrong fitting currently...looking for a part number to order the correct flare fittings that I need.

Any help would be greatly appreciated!