[Vipergrün]

The right (passenger) side is a piece of cake. Just replace the existing block off plate with the ducted plate. The driver side takes a bit more work since the distributor cap will not fit if the duct is left in its stock form. I removed the cap, installed the duct, covered the area on the duct where fitment is tight with blue tape and persuaded fitment with a hammer and a piece of 2x4. You just have to slightly hammer in the duct tin in for clearance of the cylinder 4 plugwire.

good luck!