Then your only real options are the Passon A855 for $4300 or a used A833OD, plus the parts to swap your car to a 4 speed if it isn't already one. Even the Keisler setup cuts the flange off the front of the crossmember, and the 200R4 needs some scallops. Everything else that I am aware of requires you to build a completely new crossmember and transmission mount.
You can rebuild it, there are ways to keep the strength, some of them are even way overkill. Just don't cut it out and go without a crossmember. People have, but I wouldn't.
