As the title says. Appreciate your help.
Almost, there never was a 990, only the 990R.Technically, the 1090 (no R) model was introduced for the 2013 model year.
Before 2013, the bottom rung B4 was the 920 or 990.
By the way, I do not see where the factory web site shows previous model years. Any links? I used the wayback machine on archive.org to step through the years.