Answer to your first question with liner problem was first few 2000 cars (I can't remember exactly how many...but as I recall, less than 200...maybe fewer...for more info, do a search using JonB for the author as his answer gave build dates and numbers)
In MY opinion, ALL of the 2000 forward Vipers have a potential for ring seating worries, hence the NEW and RIGID breakin instructions as covered in Viper Mag, Spring 2000, page 36 written by Herb Helbig.
Remember that emission standards got tighter about that time...there are reports of ring problems (high oil consumption) with a few Vipers...AND Z-06's...AND Porsche 996 Twin Turbos... by my recollection as well. Makes it tough on manufacturers...we want MORE HP, better durability; EPA/CARB/etc. want fewer emissions, lower fuel usage; makers are scrambling to keep up; oil companies having to serve MANY masters...low startup drag, maintain lube properties/anti-wear at high temps, substitute additive packages as some products banned or reduced while providing anti-corrosion protection, etc: and gasoline companies having to "mess with" their formulations all the time !!! TOUGH BUSINESS...especially when some buyers of this type auto can't seem to hold themselves to the breakin recommendations at all. Glad that I just have to buy them and drive them !!!
I am sure that there are more informed opinions that will follow,... thought I'd just try to get the topic rolling.