Question/story for y'all to see if anyone else has experienced this.

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1. I had a hard brake line rupture while driving, the hard line from the union from soft line to hard , bracket at the steering knuckle, hard line to the front driver caliper.

2. replaced brake line

3. master cylinder completely ran dry when line ruptured, it was pissing everywhere. Refilled, and no fluid made it to the replaced line ( undid line and pushed brake, no fluid )

4. pulled master cylinder and saw plunger was fully compressed, could not get it to release

5. replaced master, bled and bled and bled and bled ( probably a good 10 reservoirs full) still spongey brake, top half was completely dead, got med firm about 1/2 was down, but would sink to the floor while holding

6. replaced cylinder a second time thinking possible bad cylinder out of the box

7. repeated step 5, same results

8. thought air had gotten into abs system. Attempted to make abs trigger to force air out. No improvement. Method used: put truck on jack stands on all 4 corners, remove wheels, 4HI, hit gas to get up to speed and slam brakes. I think since there was no weight on the axles, the brakes engaged without abs.

9. took it to a shop to hook to scan tool to manually engage abs system and have them bleed it ( not a dealership )

10. shop could not get pedal to firm up

11. shop recommends replacing master cylinder.

At this point I am at a total loss. Has anyone else experienced this and if so, what was the remedy you found?

Thank you for reading