Hello! Unfortunately we do not offer an aluminum radiator specific to the Mazdaspeed3. If we have enough interest in such a product, we can certainly notify our R&D team!
Let us know if this is something you would like us to develop, and what features you would like to see!
I can vouch for their product in my MSP. Fitment was great, no issues, even when I had a warranty claim. Great company, great products. I have added their Power Steering Resevoir and Coolant Resevoir to my car, in addition to their Oil Catch Can.
