2002 - Viper Chain Width

[Fleabags]

I don't know why, but I can't seem to find a definitive answer from anyone on this. I wanted to change my top sprocket from 22 to 21 to accomodate a 1.5inch track (2002 stock Viper 22/39).

What is the stock chain width?
Should I buy OEM or doesn't it matter?
HYVO or Non NYVO?

Thanks

 

[mrviper700]

its 13 wide hyvo

 

[Fleabags]

Thanks Mrviper700