Blake442 wrote:That "foot wide" piece you speak of is just behind the trans x-member.
It's a fail-safe for the driveshaft so it doesn't hit the road if it lets go up front.
It bolts to the floor pan. Pretty much every "bolt-in" driveshaft loop for a G-body bolts in there.
Actually, I'm pretty sure it's a body stiffener. I doubt GM ever cared about a factory driveshaft safety loop.