2004 Rear Subframe into a 1992 Miata. Are the suspension pieces interchangeable?

Hello MazdaRoadster,
I have a 1992 Miata that used to have a 1.6 viscous 4:30 rear differential.
I now have a Torsen 3.9 differential along with the related axles and driveshaft to make that Torsen differential work.

For my Ecotec engine swap I plan to eliminate the adapter plate and the Miata 5 speed transmission next winter to install an AR5 transmission. (same transmission that would be in a Solstice)
To do that I may want to eliminate the PPF (Power Plant Frame) by using the K-Miata kit to support the rear end.

https://kmiata.com/collections/trans...for-ppf-delete

https://cdn.shopify.com/s/files/1/11...G?v=1536087147

From the K-Miata website:
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Sorry, 1990-1993 owners will need to swap the rear subframe to a newer version since the 1.6L cars did come come with any attachment points for a rear subframe brace.
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If I go this route I will need to swap in a 1994 to 2005 rear subframe.
I think I found a nice low mileage 2004 subframe I might hoard until I do the swap. But it is a bare subframe. My questions is:

Will all my 1992 rear suspension parts swap over to the 2004 subframe?

Quote:

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Originally Posted by MiataQuest

Hello MazdaRoadster,
I have a 1992 Miata that used to have a 1.6 viscous 4:30 rear differential.

If I go this route I will need to swap in a 1994 to 2005 rear subframe.
I think I found a nice low mileage 2004 subframe I might hoard until I do the swap. But it is a bare subframe. My questions is:

Will all my 1992 rear suspension parts swap over to the 2004 subframe?

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Yes. Key difference is the exhaust hangers are in different locations on the NB rear subframes. Any muffler shop can weld new hangers on your exhaust to match the new locations.