caterpillar R4

ive had my caterpillar for a few years now and when I got it , it was a basket case , wrong motor ,olds diesel was in it , but the guy still had the orginal motor, one missing a lot of parts motor was stuck , since then I have rebuilt the motor, and been trying to find parts like, flywheel with wring gear, and also starter its all that's holding me back from putting it back together, and also carb rebuild kit, if any one no where I can find these parts please let me no or what other models I can get them off from thanks for the help in advance,

I just bought a R4 for prats if I can help let me now I am restoring a 2t so some of the stuff like the sterter I dont need.

Where are you located . Im interested in fly wheel and starter .