need help finding tracks or building them

[thirty two]

Hey guys I have looked all over for a track system or just individual track pads for my 1/12 excavator I'm building and can't really make an progress on what is a bullet proof design to make or a sure fire system to buy. I think the biggest.problem is that for some reason its very difficult for me to read these foreign language websites gets frustrating. So if anyone could help or point me in the right direction I would spend up to $400.00 but that's my limit. Thanks