found my vin on here says its a yenko help

[Atuckman]

an earlier post here mentions that 427 conversions were assigned a YS number. do members support this claim? can it be disproven?
some cars have lower transaction prices which is reason for doubt. Supposedly the yenko paperwork for this car listed a low $ price for this car suggesting "unconverted". after some more digging, sounds like there was supporting conversion docs away from yenko.
just trying to understand whether all 67 or 68 yenkos on the list with a YS number are considered conversion or how its disproven. thanks