There are other bars that will fit. I didn't have one on my Sub1 as the previous owner never used it and it ended up lost. A look in the spare parts drawer at my local Guitar Center found one from who knows what. Fit great and I use it all the time.
If you want a genuine EB replacement, you might want to ask DuBaldo Music either here or call 860 649-6205. They'll actually know. The GC was sort of a run around and nobody could figure out how to order it before finding one in the spares.