Conforming clothing will only fit the model that it was created for. If the clothing is dynamic, meaning that it requires the Cloth Room to fit the model, then it could be possible to fit Tyler from another model with some adjustments. This may be beyond your ability ATM. Tyler is based on the Ryan Model, they share the same mesh. However, Tyler was released by Content Paradise, a subsidiary of Smith Micro, and the site is no longer available. There could be a chance that Tyler may become an additional standard in Poser as Miki 4 which is a female model released around the same time as Tyler, and she is a standard in Poser now. Presently, he is unavailable for purchase.

Edit: I didn't notice that he was available for purchase here at Renderosity. Good to know.