Hello again,
There will, no doubt, be plenty of aftermarket products coming along in the next few months for Revell's early war IXC kit in 72nd scale. Here are some figures from Munich kits -
These would allow you to depict U 154 in the Caribbean. As told in Paterson's "U-Boat War Patrol" book, torpedoes were transferred from U 154 to U 564 in August 1942, during which time U 564's commander, Teddy Suhren, swam over to U 154.
There will be more figures in due course.
Cheers,
Dougie