Cletis,
Your best bet is to contact
Sean, who is selling a set of Task Force (55 2nd) middle/rear seats. Sean should be able to give both the frame/cushion measurements and the floor-bolt geometry measurements.
My guess is that the seats are different (between series), especially the middle seats. However, Sean thinks the seats might be the same (for both series).
The frame/cushion design might not be the same for both series (this might only be a minor consideration).
Maybe GMONIZ will post better information?
Tim
