Hi fellow car lovers, I am Paul. I am the other side of Hancha Group. I do all the aerodynamic development. Like Earl said, we are more than just a parts company, we are an engineering group. I thought I would pop in and show a little of what we can offer on the aerodynamic development side of things.
Our aerodynamic development is done using CFD. To do this, modeling is done using Creo Parametric (formally called Pro-Engineer). This is where the car model and various other aero bits are modeled. After this, the analysis is set up and solved. We use OpenFOAM as our cfd software which is ran off of Linux. All of our work is completely open to the customer.
We have already began some aero development on the BRZ/FRS/FT86. We have designed a single element wing (currently getting quoted). This work is shown below.

Rear Wing Render

An idea of the placement on the car (exact placement has now changed a little based on our CFD analysis)

Data of the wing

CFD postprocessing

One of the first cfd analysis of the wing on the frs model
We can do more than just this also...
We have experience with development on race cars including open wheel cars, dragsters, and production based cars. Besides just race cars, we also have done some work with semis.

Open Wheel analysis

Dragster analysis

Semi analysis

Semi analysis
If you have any questions or a quote on some work, feel free to let us know.
Cheers,
Paul