Yoyo @ 278 is a sure thing.
Legends say Whiskey @ Roseville Rose can get a gulp, unverified though.
There is this really big lady I've seen offering privates on escortsandbabes.com., claiming a you can throat fuck her. I think she is too unattractive for the price imho
And as always, there is always the jungle girl for a guaranteed throat fucking.

I do have only one sure fire lead.
BUT..... after getting fucked over by forum member(s?), I am reluctant to give it up
I've been seeing about 6 regulars, and one of them wowed my by giving me the whole dong DTBBBJCIM service. Even with my girth. She has come a long way.