paint ?
try no bottom pc.
and try dippin it down in a arch, at the back of the steering box to match up with cowl bottom...
then the back of frame at firewall will 'flow' into body/cowl..
the lines i am seeing in your paper are just too straight....
the frame has beautiful lines,,,consider leaving exposed and painted a rich brown......or machinery gray...
i really enjoy your build,,,thanks for sharing it