I've got Mato metal tracks on my Tam Persh, and they fit fine. I wouldn't recommend them though, they lose bits every time I run them. You need to have alot of replacement pins and retainer clips. I've had the Mato's on there for about 1 year, and have replaced maybe 25 parts so far. Just poor molding resulting in castings disintegrating with use.

Kenny's tracks or Impacts are the way to go. I didn't do much else to the Persh. Best Tamiya I've built.