The rear diffuser was a fine piece of Eric's work, scaled perfectly from the model. Here's the first step.
The real genius work was the frame Eric made.
Getting it fit right was key as it would be supporting much of the exhaust plumbing.
This is something the factory in Modena would have had a hard time reproducing.
The fins were framed then skinned. A surprisingly quick piece of work.
Here's one of the two halfs of the diffuser.