80's ram with four full doors??

I had no idea Dodge made a 1 ton club cab ram?? I cant find any info. in my 80' ram truck brochures. When the heck did dodge start offering them?? Are they rare?? This is only one ive seen,

http://austin.craigslist.org/cto/1849328569.html

I dont have the exact years right off hand, but they are quite common.