Rearend cover install.

Hi everyone. Happy Vetteyear, Got my cover and all the necc hardware. I know this is gonna be a bear. I was guessing i would mount the cover to the crossmember and then lift it w/a floor jack and then press them into place w/ the jack. I assume they are pressed in? anyone who can give me a heads up on this would be appreciated. Put rear shocks on over the w/end and that was pretty tuff. would have been almost impossible w/out ac/ ox torch. The top bolts were the hardest part to get out. thanks a bunch Sharky.