How many of us are there? Owners of Dodge based RV's?

Does any one have a suggestion on where to find some parts for repair. Was out this past weekend and had a gust of wind bring a 12 inch diameter oak down onto the motorhome. Having a hard time finding a new refridge roof vent and new corner edge seal. Damage wasn't to bad. Have to go in and replace a couple roof rafters and some side wall studding. Probably a total fix for less than $200. Thanks in advance for any info.