I have a 2.3 Bronco with a Mishimoto Catch Can, and it was over half full after just 3000 miles. From things I had read, I was expecting like a few tablespoons. I am going to have to empty it more often than I thought!
Still waiting on my 2 Door Base I ordered in July of last year. I know it may be quite awhile until I get it but I have seen several Broncos on the roads in Minnesota recently which makes it feel like, yes, it will really happen!