Spacer Kit - Fibre Laminate ED8727Spacer Kit Fibre LaminateSuit Edelbrock Ford 5. 0L 5. 8L manifolds ED3821 & ED7126 ED8727 8727 These fibre laminate spacers for Edelbrock Ford 5. 0L 5. 8L manifolds provide heat insulation between our upper and lower manifolds for a cooler charge and more power. They also raise the upper manifold 1 2" for increased valve cover clearance. Kits include everything you need for your 5. 0L 5. 8L