I have got to admit, though "A Gathering of Winds" looks like a fun adventure, I was rather disappointed with Wolfgang's 3e statting of true ghouls. He seemed to veer pretty hard away from his 2e version of "Kingdom of the Ghouls."
For my money, the "gravetouched ghoul" template from Libris Mortis comes a lot closer to capturing the original feel of true ghouls. (And maybe Wolfgang intentionally went off in a new direction in order to avoid any redundancies with this template.)
I suspect the best way to get back to the 2e vision of true ghouls would be to use the gravetouched ghoul template PLUS a new prestige class, something like "Scion of the White Kingdom" to capture some of the neat, missing abilities of 2e true ghouls. I bet a nice 4 or 5 level prestige class would do the trick.