I think you need to rename your project as it is bringing you bad luck
I'd give the guy at G-Force a call. I've spoken to him a couple of times and he's always been helpful. He can at least confirm that the crossmember was designed for a big block setup. It does appear from the pics that way but the offset looks much more significant than I would expect. I think the offset is only 5/8" or something <1" anyway. The longer trans would require more off set though due to the angles involved.
Anyway, if that is the case I guess you could swap your mounts out? Although not sure that would be what you'd want to do and could just move the problem. It might help your steering box clearance though. I have a set of big block frame stands and a couple different sets of solid mounts I could send your way to experiment with if you'd like.