I also have a Sun Valley X-treme. It is a 2003. I ordered a copy of the Woodalls rv guide from 2005 from Amazon. It has answered most of the questions I've had about my new to me TT.It seems to be pretty well made, with standard equipment, ie: Suburban stove,water heater and furnace; Dometic 2 way fridge; Dometic air; A&E awning; Shurflow water pump. We added our own microwave & TV and are currently spending the week in the mountains. I ordered the older manual so it would be more in line with my TT, and it only cost me $20.