made up the interior rear wall and floorpan this morning, tricky getting it tight on the firewall but I got it done. The rear wall follows the chassis "z" so i can have as much room in there as possible.
Now for something a little overkill for the powerplant...
Started with this part box manifold, sliced it down the middle and filled the runners to line up with the heads.
cleaned up for whats coming next..
yup, that should do
needs some cleanup and shaping, but I think I can make it convincing.