New pads and rotors and rebuilt calipers (all move in and out freely).

Bleed the brakes multiple times.

No Leaks (at least not yet).

Pedal engages half way down and full force is almost at the floor.

Likely causes are

A) The Master Cylinder
B) Brake Booster

What is more likely?

Any diffrence between brake booster for Soft Suspension and Hard?

 

do you still have tyour ABS Pump? (if you had ABS that is), if so check for leaks on that they are hard to spot, but that can do it for ya. Check if all your lines are tight and snug.

I would get a master cylinder first, since they are cheap lik ~60 bucks and see if that does it. The brake booster is expensive to get, and usually you have to endup getting a used one from another owner.

 

In addition to checking and/or replacing the master cylinder check the vacuum to your brake booster.As mentioned above these are not cheap,however the master cylinder is.You could also adjust the brake pedal lever itself from the inside. if your brakes feel ok this could be an option as well.