SPECIFICATIONS B&M Shift Improver Kit - GM 4L60E Transmissions. Buy now and get same day shipping! Perfect for Towing or Street/Strip Use Eliminates Soft and Sluggish Shift Over 65 Years of B&M Quality Eliminates Shift Overlap Provides Crisp Shifts Easy Installation FITMENT 1993-2006 GM 4L60E Automatic Transmissions Including Buick, Chevrolet, GMC, Oldsmobile and Pontiac SHIPPING We do our best to ship most items same or next day. For all products, free fast delivery of the UPS is already included in the price. NOTES This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations. If you have fitment questions or concerns, please contact us prior to ordering.