
a lot of older mowers used bronze bushings the wheels have 1 1/8'' hole in them and the bushing pressed in an had the center dia of the bushing 5/8 and 3/4. newer 90's up started using
3/4'' or so hole size and started using nylon type bushing that wears out pretty quick if you grease them, but being a mower, before you do this, you can get that wheel size to fit, but you will lose probably over half of your turning ability, unless widen the front axle then have to widen rear to match. or if you have room may have to notch out the frame so rear section of the tire has room to turn. if you haven't bought the wheels you want to use, look for ones that have the the least back spacing. average front tire dia. is around 16'' and in full turn are pretty close to frame.
plans- pick out the body style of jeep you want, they make a kit ole willis style army jeep for mowers, rest is a blank canvas.