Small block to big block trans cross member doesn't work after swap?

Minnesota Muscle said
That mount appears to be just the right amount "forward" that I need. I need an inch to about an inch and a half forward movement from what I have.

What is the second part that would mount to the trans itself?

The factory mounts are all the same. Yours appears to be fabricated. A factory crossmember and mount would move everything forward the required amount.
Any '67-'72 will work.