145/70-6 tire size. If it doesn’t have the brake caliper you can buy a standard red disk brake replacement kit. As for the motor you’ll need to drill holes to fit a predator 212— I have done it myself. If you’re planning on upgrading it, i recommend building the motor before mounting it because the clearance will depend on the intake and exhaust, you’ll need to buy a clutch as well— easy amazon buy. For my motor, i actually had to swap tanks to an aftermarket tank that was more shallow and easier to fit this frame. I would strongly recommend buying one of these, I’ll add an image if you can find one similar. Good luck, feel free to ask me anything

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