Option three also come with the heat shield, which is a must. You can get the fpu without getting option three.. If you don't want the filter, get Option 1 or 2. then you will get the shield and the couplers. No extra parts needed. As for the FPU coming with all the couplers. From what I understand, it only comes with the coupler that connects the FPU to the MAF sensor, and to the engine (not directly, but you get what I'm saying). You'll still need the couplers to connect the MAF to the filter.
CRABS o3, Custom Magnaflow Exhaust, WAMS Performance tune, Racingline STB
Platinum Apex Rims (18x8), Hankook v2 215/45R18, Painted calipers (Red), Complete debadge , Handle Overlays (Gloss Black), Arrow Overlays (Gloss Black), Grille Lighting (White LED's), Tinted Tails (2 coats VHT Niteshades), Painted Battery Cover (Silver with Red), Painted Engine Cover (Silver with Red), Eagle Eyes Projector Headlights (Black Housing), Upper Recessed Grilles (Chrome)
2 12" Memphis Subs (15-MCP12S4)
600watt Sony X-plod Amp