5 String Neck: Scale?

I put a bid on a neck in Ebay. Without paying attention to the details Anyway...it is a 5 string:

Maple and has a Ebony Fingerboard, 9.5" raduis on fingerboard.. Further more it has a Double acting truss rod Fretless, the tuner holes are for two step bass tuners The nut width is 1-3/4" Heel width is 2-3/8". The neck has a C shaped back that measures 0.900" at the first fret.

It is fretless and without dots, from the nut to the bottom of the fingerboard it meassures 20-3/8"

My question is what kind of scale bass could I make? Is it useful for a project down the road or should I just let it go?

Any help is greatly appreciated.

 

OK thanks.

Could I bolt it to a body that had a 28" neck or would further mods be in order? The neck pocket doesn't seem to be an issue.

I'm so wayyy out of school with this one