I special ordered the mounting piece for the normal valk from a bits seller and cut it down to fit between the parts hold the doors on.
I then special ordered the normal valk base and mounted the plastic piece in the middle of the base.
It sits just fine.
I also ordered new plastic canopies, intake, and engines.
I couldn't get the original resins to fit without a bunch of sanding that destroyed too much detail so I just updated it with plastic parts.