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There has been plenty of talk about OptiSparks on CamaroZ28.com message = board.=20 Go to the site, and go to the forum and do a search for OptiSpark or = DynaSpark.. You will get tons of results with TONS on good, useful info.
Hope this helps with the fix. I just replaced my opti on my car about 2 = months ago. =3D)
Good luck,
Would any of the posters on camaro.firebird happen to know of a = mail order seller of electric distributors for our 5.7 Ltr. LT-1 = engines. I need the now popular Opti-Spark Distributor, but I was = looking for a more economical source than the typical dealer. I was = looking for some source outside of J.C. Whitney, e.t.c which may be a = little off the beaten path.