Has anyone successfully used the USCartool A500 Crossmember?

Ok, so I'm installing an A500 into my '68 Dart.

I bought the USCartool A518 / A500 crossmember. It uses the existing 4 mounting holes that the original transmission crossmember did.

So I cut out a section of my upper crossmember to make room, and cut just inside of the inner original mounting holes.

Just tried doing my first test fit of the A500 to see were I may need to make more room.

As you can see from my pictures, it doesn't appear to me that there is anyway to get enough clearance for the transmission without cutting out more of the upper crossmember, probably outside of the inner mounting hole.

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