Couple Points:
1. It is normal for an engine to have SOME oil usage. It is not unreasonable at all for an engine this large to use 1qt in 3K miles. You can easily ingest that much through a poorly designed PCV system... which the Viper does have. Look inside your intake manifold sometime.
2. It is even more normal for an engine with a Forced Induction Rebuild to use some oil. These builds have wider ring gaps, larger piston to wall clearance, usually have positive crankcase pressure, and often use catch-cans as a result. A build like this is almost expected to use some oil, and it is entirely dependent on how it was set up, and what systems it uses. If it is FI, and doesnt have a PCV valve or poor breather setup, it is GOING to lose oil every time you enter boost, regardless of the ring seal. Check your breathers, manifold and piping.... it probably isn't going through the rings, just everywhere else!
From what I have seen, N/A engines and dry sumps tend to use 1/4-1/2 Qt. per 3K miles, Small boosted builds are around 1 Qt. per 3K miles, and Large builds can be as high as 2 Qt's. In most cases however, revising the breather setup on the big builds can bring big builds back into the 1 Qt. ballpark... and then there are the exceptions. I have seen botched ring gaps, no PCV on Boosted cars with a direct line from the manifold to crank case....... it is no surprise when those cars burn 2+ in 1K miles.
