You don't have to remove the manifold to do it, but it sure is a lot easier unless you are very good with your hands. I believe there are 6 bolts holding the manifold itself and there may be two more very small bolts holding the coil pack bracket on the manifold.
2001 DII, 2" Rovertym lift with OME shocks, D1 Cdl linkage, La Ruta My roof Rack, 4 Off road lights, Custom exhaust no cats and flowmaster 40 series, Trimmed front bumper. [Very sadly sold
2010 F150 XLT 5.4L V8
stock for now... Towing my Rover wherever its little heart desires.