65-66 Front Jack Points

Just wondering what people use for front jack position points on 65-66 cars
if wanting to raise the whole front end. I have typically used the frame rails
but know a lot of people use the front cross member. I recently tried this and
while certainly easier I was pretty uncomfortable seeing the cross member
flex under load, especially with the original Cobra T-pan right above it. Is it
normal for it to flex like that?

Thanks,
Dave