C-15 were on trucks after 1999. On 1997s, they only 3406E. Go check on truckpaper.com. If you want to buy a wrecked, burned, theft, or misc go on bigtrucksalvage.com. That's how got my 2000 freightliner century which was burned, drove for a year and sold it around $20,000 and 04 Peterbilt 387 with c-15, which was rolled over, we replaced the sleeper and sold to Russia for approx $20-30K.