Vintage Dirt Bike Q & A

Hi all im still pretty new around here but i have an old Honda 125m that i bought quite a few years ago and rode for a while and wrecked a couple times and then the lower rod bearing stuck. I was going to rebuild the motor right away but the lower rod parts where discontinued from the dealer and then i got another bike and so it just sat for several years. Ive been thinking about starting on restoring it but i can't seem to find the engine parts that i know i will need like the lower rod kit and maybe some of the case bearing. fenders and stuff like that seem to be easy to find but the lower end engine stuff i don't see anywhere. Any body know where i can find this stuff??