I have a working dwell reducer for sale.
I have been using it for the last 7 year without issues on my 1.6.
The board is from Boundary Engineering configured to the original specs.
I had this on my 1.6 running with the Toyota COPS and the OEM ECU.
I no longer have a need for this as I have moved to a VVT motor and an AEM-4.
This reducer will work on the 1.6 or the 1.8 cars as long as you follow the wiring instructions, which are a little different for each. Can be found here; http://www.miataturbo.net/useful-sav...4/#post1185850
,and elsewhere on the net.
$80 shipped within the USA.
PayPal is OK
Looks like this, which is my spare