Some are, some aren't. There's no set constraints for the lap times. The best benchmark is the one set by sport auto, they use the same driver, route and factory vehicles.
There is a map of the 'ring next to the door number...
7:22 on full slicks would equate to a 7:40 on road tyres, at a complete guess? @Nurburgring might be able to guesstimate betteR?
Given how wild concept interiors are, it's a reasonably good job of recreating the FT1.
Still seems more A60 than A80 inside.
As long as the seats are low and the driving position is good... I'm happy :P