It would appear to be a pretty good bus in pretty good condition.
The 8V-71 would be a great engine in flyover country. Here in WA it is a bus that is stuck in the sloooooooooow lane on any hill and stopped in the breakdown lane on any long hill in the summer as it waits to cool down.
The genset is going to be worth nearly as much as whatever the bus gets.
$7K-$8K would be the top end for bidding for me.
If anyone is serious about this bus I would be willing to go look at it. The Chehalis RB Auction yard is a mile from my house.