update:
As previously mentioned in my last post, I was debating myself and decided not to use the same old brake booster. Taking a chance of reinstalling the old master brake booster and not knowing for sure if the push rod will set in place with that wheel inside is not something I want to worry about. I should have got some knee pads while I was under the brake pedal to remove the nuts and the pin on the brake pedal. These things were not covered in the removal process. Live and learn. I was outside on the driver door side (on my knees) to give myself some space to remove the brake booster nuts and the pin that goes inside the brake pedal. I hurt my knee and it took long time to heal.
I did some research on alternative methods to remove that stripped nut. I used the excellent nut/bolt extractor set I bought on amazon.
https://www.amazon.com/dp/B07X7XF9NT?psc=1&ref=ppx_yo2_dt_b_product_details. I was abled to removed the nut that was stripped on the inside brake booster. See the pictures below. I used the 13mm inside extractor socket with 19mm (3/4 inch) outside socket short well not deep well socket. Deep well sockets will not work due to too much space and not securing the extractor socket, too much play and not being able to secure/tighten the extractor socket. Live and learn.
This extractor set is perfect due to exact measurement/size of the mm bolts/nuts removal. Did not have to worry about the length of bolt thread due to an opening hole in the middle of the socket. See the pictures I enclosed below.
After removing the last nut that was stripped (see the picture on the left nut below in red circle), I tried to pull out the brake booster. There was limited space/movement in the area to remove the brake booster. I had to unscrewed the hose that was blocking the brake booster from removing. See the pictures with the red circles below.
I will replace both 13mm nuts with new ones that goes on the inside brake booster firewall by the brake pedal.
Next step is to remove the nut on the replacement pre-charge asr below the master brake cyclinder. Also, install the replacement brake booster. Stay tune for further updates on my ongoing progress.