Engine compartment pics

Yes those work great. I actually sectioned the shock mount and behind the rear seat area & moved my rear frame rails in about 3 inches each side....18 inch wide tire can fit now.
Nice!! I'm guessing you are modifying your fuel tank or using a fuel cell.

I saw a post on here about a member using a 69 Mustang fuel tank that replaces the tire storage compartment in the trunk.

Great idea as the tank bolts in and is not welded so great for servicing.