If you want to replace the glowplugs, it can be done with the intake on, it just takes some manuevring. If you need help, let me know. I can do all 5 plugs in about 30 minutes. The trick I learned is an offset ratcheting box wrench, a 1/4 drive with 2 universals and go about actually removing them by sticking your hand under the intake, after you remove the CC assembly.

PS-Snap-on makes a ratcheting box wrench specifically for doing this job.