I'd have to agree with Dave - looks like a Dirty Birdy but the aspect ratio seems a little off (wing to fuse). The DB40 had a flat slab type stab while the original DB60 had a thin airfoiled stab. Both had sheet balsa verticals.

What throws the models proportions off further is the oversize canopy which looks like an Escape/XLT sized/type canopy indeed made for an under the hood pipe setup.

However, both the wing and stab planforms as well as the vertical fin and rudder are 100% Dirty Birdy.

It looks like someone did some "cooking" to it if it was built from a kit.

David.