Boundary Toyota Celica/Lotus Elise 2ZZGE High Flow Anti-Cavitation Billet Back Plate Boundary Sale! from 19999 /per Qty. Add to Cart This item is either made to order or has limited inventory. Please reach out to confirm lead times if needed. Boundary Toyota Celica/Lotus Elise 2ZZGE High Flow Anti-Cavitation Billet Back Plate