Just so you know, I had the same exact tap and this is what I was told by Delta (Who have been very helpful)
On Mon, Mar 13, 2017 at 11:28 AM, Customerservice@Deltafaucet.
com
c
ustomerservice@deltafaucet.com> wrote:
Dear Chris Lee,
I am sorry to hear that you are having a problem with your Delta shower
> > faucet and I am happy to be able to help.
> >
> > Based on the photos provided, you have a 1500 series shower faucet.
> > Luckily, you have the version that the valve will work with any of our
> > current T17 trims. You can see them at
www.deltafaucet.com.
> >
> > Please contact us back if you have further questions.
> >
> > Sincerely,
> >
> > Tawny
> > Customer Service Representative
I replied back:
> Tawny,
>
> Thank you for the verification. I talked to one of your colleagues on
> Saturday afternoon and they confirmed with me that we had a faucet that
> would work with the T17 or Series 1700 but not the T17T models. We ended
> up ordering the Lahara 1700 Series trim Kit from Lowes. Thanks again.
https://www.lowes.com/pd/Delta-0-5-in-Chrome-Bathtub-Shower-Diverter/1000168669
>
> Regards,
>
> Chris
Hope this is helpful.