Jayhawk: I believe the bottoms are the same. I'd have to pull one of each and examine them, but I don't see why there would be a difference. The seat backs seem to be the only difference I could see on the new ones that just came into stock. The convertible seat backs mimic the rear cowl line and taper towards the outside, the coupe ones are flat across the top. (not to be confused with the very similar looking early MGB seats.)
Kelvin Dodd
Global Sourcing Engineer
Moss Motors, Ltd.
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