Very interesting. That's a rare bus, one of only two made, and I know who has (had?) the other one that has a Cummins 855 and an HT740:
Someone should jump on it - it's a part of history. The asking price seems very reasonable for such a rarity. Crown's tour buses are very different to their school buses, so body condition is important because normal Crown body panels won't work for them. Fun!
John