Yes, pull the manifold. You need a torque wrench and some way to measure angle of rotation for the aluminium single use bolts. The bolts take an external torx socket, not sure what size. Torque the bolts to 20Nm, then turn the long bolt an additional 180 deg, the short one 90 deg. No other special tools, just the usual shop tools are used. Mostly from TIS, haven't actually done this myself.