Why not coil-near-plug with LS2's. There was a recent engine for sale that had this in a twin-plug format. The upper coils were mounted what look like a modified OEM GM LS bracket and the lowers were mounted directly to the engine tin. LS2 give you huge spark energy and are extremely cheap.
http://forums.pelicanparts.com/porsche-911-used-parts-sale-wanted/494913-fs-ultimate-2-7l-hot-rod-motor-price-reduced.html
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Steve
Sapere aude
1983 3.4L 911SC turbo. Sold
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