Look for mount mounts for 3 inch rails

[KAF1]

Hey to all, I have a buddy that's looking for a motor mount for 40mm size leopard motor that he can mount in his 42" Seducer hull that has 3" rails. Any help is greatly appreciated. Thanks in advance.
Ken

[luisoque]

Most the time the rails come 4" space. So if it have a 4" space he can use a aeromarine motor mount 36mm but fit the 40 too