Welcome to the forums!
The 500 preceeded the 1000, yet the year of the change is not part of my knowledge.
The first Excellas showed up in 1980.
2000 390 Landyacht XL
1989 29' Excella
WBCCI #6673 jerry Hodge
Have no intention of arriving at the grave safely, but rather to skid in sideways, chocolate in one hand,throttle in the other, totally worn out and screaming
"WOO HOO, WHAT A RIDE!"