One of the main reasons I mocked up the lower engine cowling was to determine the intersecting lines between it and the lower firewall.

I played around with the cowling for quite a bit to get it set the best I could against the firewall.  It may not be perfect and I realize some rework may be required, but I have to have a starting point if I am to fill in the bottom of the hell hole area and create the lower aft fuselage section.

With that, I trimmed the firewall to create an edge for the upcoming lower aft fuselage and hell hole.

Over the next few days I plan on slowly building “up” (technically down of course) the sides of the fuselage which will then culminate in me creating the bottom of the hell hole cover with an integrated RAM air scoop.  That’s the plan at least.