I tested both clusters and the speedometers don't work.
There are a few write-ups on how to test/fix them.
Here's one:
Technical Articles: How to: Repair 240sx digital speedometer with HUD.
I'd fix them myself but I don't want to lol
$30 each
#1
Has some scratches on the front lens.
#2
Has a burned out spot on the back.
I also have a projector.
It will work if your cluster works.
$10
PM me for the fastest response.