Swivel Seat Bolt Pattern

[deathman68]

I've just acquired the three pieces (missing the actuator lever) I need to install a swivel seat on the passenger side of my '73 Riviera; however, the four "dinner plate" bolt holes don't line up with the studs that protrude from the weld on base.

In this pic, you can see that they are off by 1-2mm on all four.

Did VW use different bolt patterns for different year swivels? In my search, I found a single post mentioning that this might be a possibility, but wanted to hear from the experts. The three pieces came from a late bay according to the seller.
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1973 Riviera “Annie”
Build Thread: 1973 Riviera+Subaru 2.5+5 Speed
EJ25+5 Speed Conversion Part/Cost Tracker

[TomC]

Have you tried rotating the dinner plate 90 degrees? The little notch for the release lever should point forward.
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Tom C

77 Westy
72 Beetle Convertible

[deathman68]

Yes. The bolt pattern isn’t square so there are only two positions where the holes could line up. No dice with either orientation.
_________________
1973 Riviera “Annie”
Build Thread: 1973 Riviera+Subaru 2.5+5 Speed
EJ25+5 Speed Conversion Part/Cost Tracker

[alman72]

ask the seller if instead of "The three pieces came from a late bay" if it is probable that "The three pieces came from late bays"