Add the 10?inch Custom Colored Billet Aluminum Seat Base Adapter for Bostrom Wide Ride & Seats Inc. Legacy LO Seats, a USA?made solution built to help mount select Bostrom and Legacy LO seats to the existing floor bolt pattern in compatible Kenworth models; including T600, T800 and W900 series, without drilling new holes. Made from strong billet aluminum with a custom finish such as post office blue, this 10?inch wide plate provides a reliable foundation to adapt seats built before July?1,?2018 while maintaining or slightly improving legroom and seating position. The adapter includes a hole for a Kenworth airline fitting where applicable, is sold individually and is backed by a warranty against defects in workmanship and materials from the date of purchase. Because it's a high?quality aftermarket (not OEM) part, confirming your truck's model and seat build date before ordering helps ensure proper fit and simplifies installation.