'69 Barracuda T56 swap, floor, cross member

I have to pull the hvac box anyway because I want to get the AC hooked up before next summer. Was hoping to full around with AC after 6 speed swap but its 6 or a 1/2 dozen just pull it out now. Plus even if kframe spacers fix clearance I still need hvac box out of the way because I can not access the trans tunnel that is under the floor heat ducts.

So next steps pull hvac box and check driveline angles.