The long answer to your question is that the shrouds are available from SnakeOyl. But in order to use the shrouds, Different steering rack stops (little nylon sleeves) need to be swapped out to limit how far you can turn the wheel to keep from Squishing the shrouds at full steering lock.
The flexible ducting is no big deal as most racing supply places sell it (3" dia). I'll have to look at my ACR-X pics to see where they had the ducting run to.
The Comp Coupes ahve the bottoom of the fascia cut away and the brake scoops live in that cut out and rest on top of the splitter.