There's no single answer. To find compatible seats, you'll need to:
1. Determine your E-150's year and model: This is crucial. Seat mounting points and dimensions changed over the years.
2. Check the Ford parts catalog or a reputable online parts retailer: Use your van's VIN (Vehicle Identification Number) to get the exact specifications. These catalogs will list the seats originally offered for your van's year and model.
3. Consider aftermarket seats: While original Ford seats are ideal for a perfect fit, aftermarket seats are an option. However, you'll need to carefully measure the van's floor and seating area to ensure compatibility. Professional installation may be necessary. Look for seats explicitly designed for full-size vans.
4. Check junkyards or used parts suppliers: You might find used seats from similar-year E-150 vans at a lower cost. But carefully inspect their condition.
In short, there's no simple list. Finding the right seats requires identifying your specific E-150's details and using that information to find compatible seats, either OEM or aftermarket.