On one car I run a locked out Jegs 2 wire to do timing control with my Go EFI 600.
On my other car I run Easy Street 600, and a factory HEI converted for use with an MSD 6AL (no module). My tach signal to trigger the EFI comes off the MSD box, so the stock distributor magnetic pickup triggers the box. I don't know if the MSD processes or alters the original trigger signal to reshape or make it stronger. If I had an o-scope, maybe I would check it out. But it seems to work nicely.
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"...ridge reamer and ring compressor? Do they have tools like that?"
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