I can't help you find your dream porn actor, but I do have a story related to your subject line.
I've been a fan of Christy Canyon since she first started porn in 1985-86, and saw her in person at strip clubs when she was on dance tours. On a fan forum, I learned she liked to see past pictures she had take with her fans so I brought mine with me the next time she appeared, and she got a kick out of them, and then posed for a rule breaking photo with me (my hands full of her DDs, with her pulling her panties aside). At future appearances, she invited me (and sometimes a few others) to hang out with her between shows, so I got to know a little bit about the real woman.
Long story short ... years later, just a few years ago, I awoke from a dream with a raging hard boner, probably as hard as I'd ever been. In that dream, I was actually making love with Christy, and I could actually feel my hard cock sliding into her warm wet pussy, which was enveloping every inch of me. It was super realistic, and I think I may have awakened because I was thisclose to cumming. I reached down an got a hold of my erection, which is when I realized just how hard and fully engorged I really was. A quick thumb to finger spread measurement had me at 7.5 inches, which is 1/2 inch longer than normal for me.
Within a week or so I had the same dream with the same awakening and crazy hard erection again. I wish it happened more often!