Power booster conversion?

[spencra]

I just pulled a power brake booster from my brother in laws old blazer, I believe it's a 77. Of course my 67 has manual brakes and does not have the same bolt up pattern. What do you guys do to mount the booster.
I was thinking of spot welding it to the firewall, but if it goes getting it off won't be fun to remove.
I was also thinking of cutting the mounting plate off of the blazer and welding that into my truck.
I don't know. What is the easiest way to go about this and what else am I going to have to convert to make this work.

Thanks guys (and girls)