It took a while to find this post again from Feb 2021, so this time maybe I should include some key words like bushing measurement height and similar so it is easier to find.
Anyway, some of these might have had some changes required, eg the Indy aftermarket black bushings have been said to be 14mm tall for the bottoms, which is curious.
Anything else to note and I can change this post to reflect the correct measurements / heights as well.
Updated a few options on bushings after the Ace Truck thread and thought I should measure some more I have here too.
From the site, the Ace low are lower in general but still fairly tall.
Low Bushing Set
Top 10mm tall | 91a hardness
Bottom 12mm tall | 86a hardness
Classic Bushing Set
Top 12mm tall | 91a hardness
Bottom 14mm tall | 86a hardness
As I had posted earlier in another thread, but this time using Ace aftermarket measurements:
Ace low
Total 22 mm
Top 10 mm
Bottom 12 mm
Ace classic
Total 26 mm
Top 12 mm
Bottom 14 mm
Venture stock 90a
Total 22.5 mm
Top 9.5 mm
Bottom 13 mm
Venture low top kits
Total 21 mm
Top 8 mm
Bottom 13 mm
Thunder stock 90a and aftermarket (same) 90a, 94a, 95a, 98a, 100a
Total 23.5 mm
Top 9.5 mm
Bottom 14 mm
Indy stock 90a and aftermarket (same in both cylinder and conical) 78a, 88a, 90a, 92a, 94a, 96a
Total 23.5 mm
Top 10.5 mm
Bottom 13 mm
Then Indy low head bushings 92a
Total 21 mm
Top 8 mm
Bottom 13 mm
* Added Venture in here as well.