I converted my trainer to a taildragger when I got tired of fixing the nose wheel. Easier to convert it than messing with a bent gear. You should put a plate in the fuse just ahead of the bulkhead at the leading edge. This will hold the main gear screws. It can be braced with some triangle stock or scrap. This will tie it into the sides for strength. The wheels on a taildragger should be just ahead of the leading edge to keep it from nosing over on the ground. Also bend a little toe-in in the main gear to make it track straight on takeoff. They can get squirrely on the run if the wheels are toed out. Makes the plane overreact to the rudder and start zigzaging down the runway.