sorry to tell you man, but it's either an original Honda/Acura Factory, Optional Front lip or it's a JDP Replica.
Spoon Sports never made any aero parts for the DA5,DA6,DA7, Integra chassis. The DA integra was over looked by spoon and most other Japanese tuners of that era in favor of the EF9 Chassis Civic Sir. Although most if not all motor parts from the Sir are interchangeable with the b16 of the DA6 as it they shared the same motor and similar suspension geometry, the civic's shorter wheel base and lighter chassis rendered the DA6 unfavorable, thus creating more concentration on the civic.The DA was a hit in North America, which is why there are so much parts for the car here, as compared to the limited Japanese parts, since it wasn't a popular platform.
JDP Integra DA OEM Optional Front Spoiler: The fiberglass version of the 90-91 Integra OEM Optional spoiler has a high quality and durable build. The spoiler is fits over the lower portion of the bumper, adding more character to your DA.