NOT KNOWN DETAILS ABOUT CAT 257B3 SPECS

I would just take your time and effort and store about for an even better deal. If you're not confident that You'll need a CTL, you can constantly increase OTT tracks to a wheeled equipment, or select a VTS method. I would be afraid of working any kind of rubber tracks even though if you'll be in rocky, sharp places. Just my $.02. Very good luck.Li