Hi Ken,
This is a little late but...
Actually there is a subtle difference in these seats.
The backrests (squabs) for the later model cars are a
little bit wider at the bottom of the outboard side.
(The area around where the seat recline control is).
All of the replacement seat foams I have seen are the
narrow type, and would fit inside either covers, although
the latter covers are a little "baggy" looking when used with
these foams.
LBCing U,
Bob
> I raised the question because when looking
> through the Victoria British catalog, I noticed they had different part
> numbers for the foam backrests between 1973-76 and those for 1977-80. The
> foam seat bottoms had the same part number for all model years.
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