dpitz wrote:could anyone tell me please if they ever changed the back 3 plugs in their fto and if so did they need to replace the inlet manifold gasket?
You may or may not need an inlet manifold gasket, theres a possibility of ripping the existing one when removing the inlet manifold. If you do the job when the engine is slightly warm, theres less of a chance of it occuring. To be on the safe side, have one spare just in case.