Finding parts for an Innocenti can be difficult if not only for not knowing what car Innocenti used the parts from to create the Spyder.
| Part | Vehicle Cross Reference | Likely Supplier |
| Windscreen | None – Spyder Specific | Mr Fiat |
| Front Signal | None – Spyder Specific | eBay |
| Rear Tail Lamp | None – Spyder Specific | eBay |
| Steering Stalk | Austin A40 Countryman | eBay |
| Steering Nacelle | Lucas 37SA | eBay |
| Convertible Frame | None – Spyder Specific | eBay |
| Convertible Top | None – Spyder Specific | eBay |
| Tonneau Cover | None – Spyder Specific | eBay |
| Trunk Gasket | Fiat 124 | Mr Fiat |
| Door Gasket | Alfa Giulietta | Classic Alfa |
| Door Pull, Locks & Handles | Alfa Giulietta | Classic Alfa |
| Headlight Rim | Fiat 850 | Vick Auto |
| Directional Switch | Lucas 37SA | eBay |
| Light Switch | Austin A40 Countryman | eBay |
| Air Filter | Fram FA4522 | Local Store |
| Front Coil Springs | MG Midget 1500 | Moss Motors |
| Front Coil Gaskets | Triumph TR4 | Moss Motors |
| Exterior Mirror | Porsche 356C | Stoddard |
| Dash Gauges | None – Spyder Specific | Palo Alto Speedometer |
| Wiper Motor | Fiat 500 | Ricambio |
| Electric Switches | Unique to Innocenti | eBay |
| Bumper Overriders | Unique to Innocenti | eBay |
| Locks | Unique to Innocenti | eBay |
| Door Handle | Fiat 124? | International Auto |
| Trunk Handle | Unknown | Giorgio Ferrari |
| 950 Engine | Austin Sprite 948 | Craigslist |
| S Engine | Austin Sprite / Midget 1098 | Craigslist |
| C Engine | Austin Sprite / Midget 1098 | Craigslist |
| Brakes | Austin Sprite / Midget | Moss Motors |
| 950 Suspension | Austin Sprite 948 | Moss Motors |
| S & C Suspension | Austin Sprite / Midget | Moss Motors |
| OSI Side Emblems | None – Spyder Specific | eBay |
| Fuse Box | Unknown | eBay |
| Magnetti Marelli Starter | Unknown | eBay |
| Transmission | Austin Sprite / Midget | Moss Motors |
| Wheels | Austin Sprite 948 | eBay |
| Hubcaps | None – Spyder Specific | eBay |
| Side Trim | None – Spyder Specific | eBay |
| Grill | None – Spyder Specific | eBay |
| Headlamps | Fiat 850 | Vick Auto |
| Tires | 145R13 | Coker Tire |
| Gas Tank Filler Gasket | Austin Sprite Mk I | Moss Motors |
| License Plate Lamps | Maserati | eBay |
| Under dash heater doors | Austin Sprite / Midget | Craigslist |
| Interior | None – Spyder Specific | Local Shop |
| Glove Box Door | None – Spyder Specific | eBay |
| Dash Panel | None – Spyder Specific | eBay |
| Dash Pad | None – Spyder Specific | Local Shop |