Hey man, take it from an aerobatic flier who also likes P-40. H9 will come out in march w/ a 65" span P-40 that's perfect for ST-90. It should have a stiffer retract than the H9 Corsair, as it says in Horizon website. The 1st generation H9 warbird ARF's like silver Mustang and Corsair have received an unanimous compalint on the weak retract struts. The newer Mustang Miss America supposedly has stiffer struts.

With the introduction of Titanum struts, the weak struts are a thing of the past. Central Hobbies carries them.

VQ also has a P-40 in 3 color schemes, and it comes w/ mechanical retract PLUS functioning oleo shock. Not too bad for $300. Morris Hobbies supposedly carries them, but I can only find the link in Yahoo/Google

My first warbird is a Zero 120 from CMP. It flies rather nicely, except since it doesn't come w/ retract, I spent as much time eigineering the retract installation as building the rest of the plane. I wanted a Zero after watching Pearl Harbor, but the purchase and building of the Zero took its time as my 3D planes took most of the time.

I think warbirds is really fun to fly with friends, making low pass chases and just talking to one another while flying. It's much more social than concentrating on the harrier or torque roll.