I recently picked up this kit (#51512 or SP12). It was in the "used" section of a local shop and of course it is missing parts, in spite of the owner's policy of the kits being complete - and now he won' touch it. The previous owner appears to have started the seats and given up at this point, so most everything is on the sprues. But, the photo-etch sheet, the metal cast wheels, and the rubber tires are MIA. With the canopy closed, I believe the photo-etch sheet can be lived without. Unless I build it with the gear up, the wheels and tires present a problem. Supposedly, later issues of this kit included a lot of extra parts, including plastic wheels and tires. Might anyone have these lying about in the spares box? The original parts are labeled "MA", "MB", and "UA" on the parts layout sheet. Thanks for looking. Ric