Wrights Dairy Farm Bakery in RI makes real cream pies. A seach of this site should find several mentions.....mostly by me
www.wrightsdairyfarm.com If you will look around the web site you will see cream cakes, but I found no pictures of cream pies, although they are mentioned. I prefer their chocolate cream pie, but others argue that the bannana cream is the best. IMO, their Key Lime pie is just a good bakery pie, nothing special.
I agree with CajunKing. The original Key Lime pie had no cream, because there was none to be had out on the Keys before the days of refrigeration and fast transport. I prefer them with cream, though, and the pies that I have had in the modern day Keys did have real cream.