Hi Frank,
My guess is almost certainly not. Think twice before attempting this modification.
I doubt the single middle will match the front seat fixing points.
If if they do, I would be very concerned about lack of crash tests, etc.
Even if they do fit, your Insurance company may be very unhappy.
What you can do is to get a mechanism that allows the front seat to swivel; if that helps.
Be warned, though, they are not cheap.
They also raise the front seat which may be a problem for tall passengers.
Measure carefully.
Unless the middle seat fit is exact, including the seat belt attachment points., you may be endangering your front seat passenger in an accident.
Could you not not buy a correct front Captains seat (for your model) from a breakers / spare parts company ?
I have a 2006 model, seven seater, with a Captains seat for the passenger; so they are available.
The middle seats are both Captains too.
(You cannot fit two Captains seats in your van as the seat rails are different (to accomodate the 'double' seat).
Be cautious, be safe.