reportedly (by a # of people) the newer orange ones have a less than stellar failure rate (tho we are the complaint dept & we get the problems) & the older ones were moderately OK. I would go to a yard & get one or two OE later ones (4 pinners) OR one or two from a parts house & the problem there is most are made overseas now & have reported reliability issues (why you get one or two) & if you can find a made in US of A unit for sale I would purchase it (take the time to have your parts house do some checking & get back to you on this). Ebay would be worth checking. Do some homework on the ballast ohms also (depends on your coil).