With these double overhead cam engines its fairly simple to do the VCG's. Basically remove the air box and all parts down to the VC's as if you were going to replace the spark plugs. You shouldn't have to remove the plugs but you will have to disconect the "boot" from the plugs. Once you're there the bolts that hold the VC's on are right there. Remove them and that's pretty much it. Not much more difficult than on a small block chevy.