I got this fuselage in a lot of other aircraft. I can't identify it but I would like to find the plans and finish it. The length is 58" and it's 7 and 3/4" wide at the firewall. Any thoughts?

Looks like a WWI ish biplane. Could be anything from a scale fighter to an "old timer" design. They all have very similar fuselage's so really very little to go on.