is several months. works great as far as I can tell. is on my '68 Ford Ranchero with a 302. Had to rebuild the carburetor and had a lot of problems with it. But I also needed a new distributor, so I switched to this electronic ignition. I'm not a mechanic but very fast and works well as far as I can tell after 4 months. I will say that the price on Amazon beats any other place I've looked and the fast shipping.
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