Looking to fabricate my own engine mounts,have some questions.

Great post!
O.P., just do the Jim Lusk modification and don't look back.
It just flat out works, and is straight forward, what more do you want?
You say that you are a fabricator, so it would be easy for you.
I am a welder/fabricator as well, and I plan on doing this in the near future when I finally install a big block in one of my A-Bodies.
I don't see any reason to reinvent the wheel here.........
BTW, where in B.C. are you from?
Feel free to p.m. me on this if you don't want to display it on the site.
I'm originally from Cranbrook, and mostly all of my cars and parts are there.

Langley.