**Twin Turbo 67 Dart Project**
Did you ever consider the MSD trigger wheel? Even though you have a 36:1 on the way:
http://www.msdignition.com/Products...-_Chrysler_Small_Block_Crank_Trigger_Kit.aspx
Yes I did, The Flying Magnet a very good looking piece but it is way too expensive $300.00 and is not as accurate as a 36:1 wheel. There are only 4 magnets so you only get a reading to the ECU every 90* of crank rotation. 90*x8=720*, 4 stroke engine.
A 36:1 wheel gets information to the ECU every 10* of Crank Rotation. So it will out perform the MSD Flying Magnet easily.
The Flying Magnet will send 8 Bits of Information to the ECU in 720* Rotation of the Crankshaft. So in theory the Flying Magnet is a "Low Tooth Count Wheel"
The 36:1 wheel will send 72 Bits of information to the ECU in 720* Rotation of the Crankshaft.
A 36:1 wheel, Hall Sensor and me making my own bracket in about 1 hour is less than $90.00 total.
Or use this one here and do a small modification on the threads...
http://chucker54.stores.yahoo.net/crtrpibrs.html
Using this Hall Sensor here.....
http://www.diyautotune.com/catalog/hall-effect-threaded-body-crankshaft-position-sensor-p-489.html