BUTLERBUILT'S No. 1 Full Containment seat for Dirt Late Model racecars, now SFI-39.2 approved for 2023 Lucas Oil and other series rules. This seat is built for an insert kit! SFI 39.2 certified for 5 years from date of original certification. Slide Job Head Surround utilizes SFI 45.2 foam whick allows the head surround to dymamically react during impact.