These are the types:

1) Long stem, Deep Bowl, Clips (Series 70)
2) Long Stem, Shallow Bowl, Clips (Series 80)
3) Long Stem, Shallow Bowl, Sealed (Series 70/80 Replacement)
4) Short Stem, Shallow Bowl, Clips (Early Powertorque)
5) Short Stem, Shallow Bowl, Sealed (Later Powertorque)
6) Long Ribbed Stem, Flat Bowl, Sealed (starting to come out now)

I can help you work out what you have, 1,2 & 3 are interchangeable, as are 4 & 5, however, to get the restoration perfect, you need to know what was original.

Cheers
Ty

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