those dash's are a pain in the butt to get apart... everything is screwed to everything else... looking good though !
the stretch will be easier than the dash, just be sure to disconnect all the plastic hoses under the driver side... you can actually keep them in tact by removing some of their mounts and stretching also... it will save issues later.
the fuel cell though... no way to get rid of that passenger side filler... but if you need a picture of what it looks like out of the car to give you and idea, i have several.