I didn't mean to sound like an ass, sorry. Well, it is your choice. The best quality is a re-make, however I don't mind if you just edit them, because they are your models and you're doing me a favour.
Here is what should be changed:
Tempest: shrink the body of the turret, and replace the thunder-cannon with a more conventional cannon. Also remove the rocks on the front.
Halcyon: remove all turrets, lower and shrink the cockpit screen, make the side-engines more bulky and angular, and add some larger fins to the tail.
If you don't feel up to it, I can do the texture and get someone else to wrap them.