the easiest alternate gear for this plane (the gs mustang) that i found is the spring air 404 gear. they are 1/5 to 1/4 scale and fit in the wing with limited wing changes.
they are much stronger than the original gear, and because they are air operated they don't need the retracts servos.
the site is
www.retracts.com
by the way has anyone checked with robart lately about the gear they are supposed to be designing for this plane? seems like i heard ayear ago that they were supposed to be doing this. i just wondered if it is still on their list of things to actually do.
ed mullen