This is a nightmare, so use Iridium plugs and silicone leads then never change again or for 100K at least. There are 4 bolts at the back of the V6 which I located with a mirror! then take off the throttle body(4 bolts) take off the throttle cable linkage (4 bolts) and the top bolts. you can do this in any order. take off the electrical connectors, disconnect the brake servo hose and the breather.You can get a replacement "surge tank" gasket for the intake.Then lift the Plenum/surge tank, support with rags and change plugs etc. - good luck!!!! took me 6 hours but will take me less next time cos I now know which bolts to take out at the rear.Fortunately I am quite supple with small hands!!!!!