Awesome car, but thanks to the good old SCCA rules, your car is technically ineligible for Street Class: “13. STREET CATEGORY Cars running in Street Category must have been series produced with normal road touring equipment capable of being licensed for normal road use in the United States, and normally sold and delivered through the manufacturer’s retail sales outlets in the United States. A Canadian-market vehicle is eligible for Street category if it is identical to the US-market counterpart except for comfort and convenience modifications as allowed per Section 13.2.A.” The same rule applies to Street Touring, Street Prepared, and Prepared.
Unfortunately that leaves you with 3 legal choices, SMF, XP, or DM, none of which are a good fit for your car. I do think, based on other cars in the class, HS is the best fit.