Today I bought a 40 inch brake line with 3/8 inch as shown on the website: https://www.autozone.com/brakes-and-traction-control/brake-line/p/brakelines-steel-tubing-pax-340/216085_0_0.

I should have done more thorough research on the issue of the present brake line attached to ASR pump below the Master Cylinder.

First, the metric 3/8-24 Inverted Flare Thread Tube Nut male that goes inside the asr pump (female thread) fits perfectly. However, I noticed for the first time a difference between my original brake line and the inverted flare I purchased. I should have known, because Sugar Bear mentioned Bubble flare brake line earlier in his post. Stupid me! After brainstorming and researching the issue, I found out that my original brake line fitting is bubble flare. Upon further researching this issue, I realized, even though the brake line is correct in diameter, inverted flare thread will not work, due to fitting size and lack of pressure and improper or lack of tight fitting to cause the brake line to leak the brake fluid. Another lesson to learn, always something else coming up and digging deeper into the issue. It seems that whenever I am working on my car on one issue, something else keeps popping up and had to resolve that first. Oh well, live and learn.

After researching the issue on the on the available options to me in regards to the brake line on the ASR pump where the brake line nut is stripped, I was hoping a brake line fitting adapter would work while keeping the original stripped flare nut intact.

I went to Advance Auto to check out the fitting adapter: Here is the part: https://shop.advanceautoparts.com/p/dorman-pik-a-nut-brake-line-adapter-bubble-flare-m10-1.0-x-3-16-in.-x-m13-1.50-327858.1/9075623-P?searchTerm=brake+line+fitting+adapter+bubble+flare

Also, Autozone: https://www.autozone.com/brakes-and-traction-control/brake-line-fitting/p/brakelines-brake-system-adapter-blf-31c/835282_0_0?cmpid=LIA:US:EN:AD:NL:1000000:BLH:8362369872&gclid=EAIaIQobChMI0eiFv5yc9QIVAHFvBB2igw1EEAQYAiABEgK2efD_BwE&gclsrc=aw.ds

The male thread is too large in diameter to fit inside the ASR pump.

Ideally, the perfect size for a brake line fitment adapter, in my case, would be 3/8" (3/16"?) Brake Line Adaptors 10mm x 1.0 Female Bubble 10mm x 1.0 Male Bubble. Am I correct? I could not find any brake line fitting adapter that fits, unless I am missing something here. Any ideas on that?

It seems to me at this point is to remove the old brake line connected to the ASR pump port as well as removing from the ABS control module on the other end. The total length of the original brake line is around 33 or 34 inches including the bending along the way. I could use the new 40 inch brake line that I bought and cut it down to size. In addition, I will have to get Bubble Flare Brake Line Flaring Tool Kit as shown in Amazon: https://www.amazon.com/Flexzion-Adapters-European-Automotive-Hydraulic/dp/B083963NP5. I will make sure to do a practice run on unused portion of the brake line so I get it right!!!

In addition, get the steel tub nut as shown in Amazon: https://www.amazon.com/Steel-Tube-Nuts-Metric-thread/dp/B07BN39CYG?th=1

I think I covered everything that needs to be done on the brake line issue, unless I am missing something? I am going to put off getting the ni-cop tubing as Sugar Bear suggested earlier, since I already got the 40 inch brake line to work with for now. Any comments, advice/feedback is greatly appreciated. Thanks to all for reading and posting on this thread. I willl continue to follow up on my progress on this post. Stay tune for further adventures of the ongoing saga of the Brake Booster push rod loose that started it all in the first place.