found my vin on here says its a yenko help

[YENKO DEUCE REGISTRY]

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I guess it all depends on your definition of conversion because I think of all the 70 copo nova's arriving at yenko unconverted and the conversion put on wheels, stripes, tach, etc. which made it a yenko deuce. The conversion in 70 made it a yenko deuce as opposed to Petes copo nova. On 69 camaro's there was the same sticker/emblem treatment as 70, no engine change. 67 and 68 camaro's and 69 nova's received 427 engine in the conversion to a yenko supercar with emblems, etc. my two cent opinion on definition..

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Bill is nicely summarizing the previous perspectives, the YS# is simply a tracking device - and was/can be used to track different things in different years. I would not hang my hat on a YS# as anything other than a YS#!