Okay: First of all, let's not get sarcastic and start any animosity amongst board members. We are all supposed to be helping each other out.
I have a friend that used this stuff and it was a PIA to get all of the steps done. For him it didnt work and when he tried to get his money back, the company just thumbed their nose at him. If you do decide to use it, I would just chalk up the 60.00 (10 for shipping) and expect never to see that money again.
I think you are wrong in dumping this motor. Once you have put in the OEM gaskets, you will be driving on new design and virtually no failures. In my experience, the refailures are due to people trying to cut costs and using cheaper gaskets or using graphite. If you use the Subaru MLS gasket, you will not have a refailure. If you can't get the gaskets, just let me know and I can get them for you for around 30-32 each. you can do the entire job in one weekend. If it were me, I'd keep the car stock and fix the motor, but ultimately this is your call.
Good Luck