Way to go Dude! I will be replacing my mounts and fabricating my own tools also. The prices that they want for these special tools is obscene. I have fabrcicated a tool for pulling axles out of front wheel drive cars that works quite well. Maybe it will make me rich someday.
I must say that a plumber friend of mine will cut the pipes for me to make my tools to press out the subframe bushings.

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1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T