Checked the model bio's for the last few years of scenes they've tagged as the girl having a large cock on Ladyboygold and these are the girls I noticed with cocks listed at 17cm or more in their bios on LBG. Links to their LBG bios and threads here for Pooh and Jasmin:
They list Polla's at 22cm and even posted a picture with a tape for scale though don't really have it set to measure properly with that big curve she has from tucking.