29’ fountain twin converting to single bbc
 

Can someone please point me in the right direction for a template to put on the black of the transom of a 1993 29’ fountain for the single engine setup from a twin engine. The transom, stringers, and bulk head has already been redone and set up for single. Just need to cut out for a bravo drive. Just need to make sure the x-dimension is correct. Please help me figure this part out. Thanks in advance.