Josh, just use #600 sand paper and follow by #1200, then plasticX polish. use plastic protectant (non armer all type, no silicone) for uv protection if u want. Cost about $30 all up, can work on 10+ cars. If u want I can give u some plastic X just for ur car.

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport