Perhaps L channel over the top of the frame with two bolts from the top into nut certs or something along those lines, attach the cross member, definitely wont fall down. Will allow you to raise the engine a couple of inches. Might think about doing the trans mount the same way, if driveshaft alignment will be o.k..
Zack, I have a question ,did you buy or make front top shock mounts ?? If you bought them , where at ??? Your car looks great. ENJOY....
Zack, I had that same crossmember and had to jack the motor to change the pan. Finally got mad and took the Sawzall to the crossmember, removing the middle half. That was 5 years ago and had no problems since.
Even with a bad camera the car looks great. Very nice job Zack and job well done!!