I believe that everyone that has had Marc, or Pete, or Greg, et al do the 500+ package to their Z would agree the LT5 should have come from the factory that way! (Well...actually Lotus came around to that way of thinking, IMO, evident by the LT5 gen-II which made over 540 clutch HP!)
The LT5 has proven to be a real killer - especially when it is allowed to breathe!
The Crown Point Corvette Club's "Team Trophy" awarded at their annual all Corvette Shootout drag racing event (coming up again in Sept?). The FBI ZR-1s have held the trophy 5 years since the first Shootout was held in 2008!
We're hoping some more of the killer ZR-1s in the area can make it this year!