D&RGW Long and Short RPO Cars

Group,
I have a couple of questions.
First off, did any of the long RPO cars have 2 windows instead of the 3 on each side?
Second, what were the numbers of the short cars and the #'s of the long RPOs?
Third, Did all of the short RPO cars have 2 windows per side?
I know the short cars had the narrow windows and the long cars had the short wide windows. Did any of the cars have the windows replaced to where the long car had the narrow tall windows and vise cersa for the short cars?
The reason I am asking is I want to scratch build a couple of each in the long and short version for the Narrow Gauge convention in Denver next year.
Thanks,
Jason