Does the front driver seat have an armrest, and is it basically the same as the armrests on the middle row seats? How similar is the front passenger seat to the one behind it?
It may be a lot more complicated than you think, I know from the way the armrest was in my truck. It was one bolted to the seat that hinged down. The seat had a big steel anchor in it to hold the armrest, so there would be a lot of custom fabbing to get it onto the passenger seat. That may have been because the armrest was also the seatback for the middle seat in the front, so it might be simpler with the Mazda5.
Registered in 2002? Did you have a Protege before or something?