try arw (anyreplicawatches). I know theyre not TD but worth a shot. You can chat with them on their website.
They dont officially sell then on their website, but I know they have them (for custom made replicas).
If you're talking about a gen movement, you could try searching a 3135 movement on Chrono24 and see if there's a listing from a seller who supports their Trusted Checkout
There are plenty of SH3135 movements for sale on ebay. Assuming you have a 3135 case and not the 2836 case, the SH3135 clone will drop fit in with no mods.