"You don't get many group one amateurs, do you? Anna's one then got crook and got withdrawn, so that was a bit of bad luck."
Laking's group one win came on board The Jewel in the 2002 edition of the 1000 Guineas at Riccarton.
If Laking is successful aboard My Reason, it will be his first winning ride since guiding Outrageous Fortune to a win at Gore in December 2010.
My Reason has not raced since May 11, when he finished ninth behind Ima Geegee.
"He hasn't had a run for a while, so he'll take a bit of improvement out of the run," Kennedy said.
"I just couldn't get a rating 65 1400m for him, so we've just given him a bit of work, and he should be fit enough."