V10 changed from 2 to 3 valves in 2007. We had an 2004 Coachmen Aurora 36' V10. Put a Banks on it to be happy with power. Very noisy. We now have a 2013 Tiffin Allegro 36LA. Yes. The 2013 has more power. Can do 50-65 up most climbs. A couple of long, steep high climbs dropped to 40-45. We do not need a banks to get performance from it. It is also much quieter. Not just because of the engine but because Tiffin insulated it. Not all gassers are made the same. In the 04 we could not hold a conversation traveling flat ground. In the 2013 we hold a normal conversation, even hold a phone calls through the bluetooth stereo - microphone on the dash. Only time it affects conversation is when it goes into high rpm on hills. We are very happy.