Sorry for the crappy pix. I dug up photos from a couple years ago when my suspension was being installed.
In the above pic you can see the SPL mid-link. Some people forego this because they switch to "true" type coilovers in which the spring is wrapped around the damper like traditional coilovers and spring/shock setups. The silver bucket is where the spring sets, it is designed for a 65mm ID spring (Swift). In this pic, the OEM upper mount rubber cone is still attached
In this pic, the Swift 65mm spring has been installed, with the SPL upper mounts that come with their mid links. This part is from 2016-ish, BEFORE they added adjustability to the top hat. This is why the spring sits at an angle.
I have purchased the new adjustable hats from SPL and will correct this issue.
Note how tightly the spring fits in side SPL's bucket
Here is a picture of the rear spring Aragosta provided. As you can see, it measures around 5 inches, well larger than the 65mm rear spring needed for the rear SPL bucket. This spring from Aragosta will work with an OEM bucket, which is designed for a much wider spring. Now it's just sitting on my shelf.