Happy Days XWC 18 or is it 18 XWC?

I'm afraid I'm the only one on the trip who never saw a horse but on the other hand some of the lads might have only seen the bar. No a local bookie organised this trip for his best punters lol, I just went to York for the buses. Interestingly Happy Days also had XWC 18 another similar Neoplan and I wonder how many times when writing it down drivers got them mixed up