One of our projected collections is a full set of the X-planes from X-1 to X-45 (or so), plus additional research and high performance aircraft that did not carry an “X” designation. That list will appear in a later edition. You can get a preview from Jay Miller’s book of the same title.)

294 Bell X-5 5.50
441 N.Am X-15 5.00 radical Revell rework
478 Lockheed "Have Blue" prototype 6.00
479 Northrop TR-3A   7.50
480 Lockheed (?) Aurora            15.00
577 Douglas Skystreak   6.00
580 McDonnell-Douglas  X-36  5.00
582 Northrop "Tacit Blue"   8.00
586 Boeing JSF (X-32)   7.50
587 Lockheed-Martin JSF  (X-35)  7.50
590 M2F2 lifting body   6.00
591 HL10 lifting body   6.00
592 HiMAT    coming
593 Lockheed X-33   13.00
594 X-38     coming
598 Rockwell X-31    6.50
599 Teledyn-Ryan Tier II+ Global Hawk. coming
600 Roswell "Centauri" Mk.47  20.00
601 Dark Horse     8.00
602 Dark Colt      7.50
627 SCREMAR + hypersonic cruise missile SCHMAC   10.00  from USAF 2025
674 Lockheed Dark Star   6.00
675 Lockheed Strikestar   7.00  from USAF 2025
692 Convair X-6 / NRB-36  25.00
725 X-34     8.00
726 X-43 Hyper-X plus Pegasus  10.00
728 N.Am. X-15-III Delta   7.00
739 Boeing (?) SHAAFT TAV  25.00  from USAF 2025
751 Aerojet Geberal X-8 and Bell X-9 7.00

Projected
Douglas X-3  (dm)
Convair X-11 and X-12 Atlas
Bell X-1     (vk)
Bell X-2    (vk)
Douglass D-558-2 Skyrocket 
Grumman X-29A   (vk)
Martin X-24A   (vk)
Martin X-24B    (vk)
Northrop X-4 Bantam   (vk)
Ryan X-13 with start ramp    (vk)

Models drawn from the VK (vk) and X-Models (x) ranges