[Cal Metal]

The Sunbeam has a unique 251/2 inch total length which is different than the standard 27 inch and 24 inch units. My suggestion would be to keep the Sunbeam tranny, as they are quite rare.

Buy a standard unit--probably a 24 inch--and sell the Sunbeam at a good premium. That Sunbeam tail is a C40R-70A040-A. Check David Kee's website under tail identification to get an idea as to what you are looking at.