I did a HID conversion on my truck and it worked out perfectly. My truck came with composite lights to start. I think that that's trick to having a good HID conversion. I originally tried an aftermarket eBay replacement housing with terrible results. If the housing that you are using is not a quality piece it'll scatter light all over the place. If you are replacing a sealed beam setup you need to make sure that the replacement housings you are using are optically correct. In general if you are taking stock sealed beams and converting them you will have poor results and will blind most motorists. Otherwise you'll end up having to align them so low so not to blind oncoming traffic that you won't get any benefit from them.
Art.
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1992 Camaro, 2x3 chassis, all fiberglass except quarters and roof. 8.864@154.1
1969 Camaro RS/SS 396/350HP, stock frame off restoration
1997 Camaro SS, stock.
1987 Buick Grand National, 11.85@115, 18,500 original miles
1987 Buick Grand National (old car, still drive/tune for the new owner), 9.20@150
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