Here are pics of the crack areas in the old one, maybe they can guide you to specific areas to inspect on yours.
Top view of left rear steering rack mount area:
Bottom view of (same) left rear steering rack mount area. Notice the amount of
easy to produce movement along multiple planes (cracks + broken welds) :
L side motor mount pedestal is above this same area:
Note broken weld:
Moving on to the right side, less overall cracking here, shows top side over steering rack rear mounting hole:
Elongated L side LCA hole (this may have been caused to a previous lack of proper final bolt torquing after a repair?):
Finally, faint hints of the beginnings of a crack at the LR mounting hole. These are where member 745 Turbo Greasel had major issues. Exceptionally dangerous here because this area is near impossible to perceive while everything is mounted up:
Get out there and inspect yours!