Well after looking at lots of plans, lots of images I'm none the wiser what the boat could be.
Every boat I can find of this length is wider in the beam by at least an inch.
None have the solid bow blocks
None have the engine/motor mounts as far forward
In fact, nothing even seems to follow the same construction process, this seems quite heavily engineered.
My guess is that it is over 30 years, which I'm guessing would make it lead acid or glow plug, which makes me suspect the big space at the rear was for one or the other of them, making the blocks at the front counter weight to this, and possibly why the engine mount is so far forward.
The super structure looks a little similar to a Wavemaster 34, if you close one eye and squint. So at the moment I guess its either put that aside and come up with something RAF tender like, or keep it and come up with a variation on the wavemaster.
I have no idea what size prop or motor to go with, or how this handles or for that matter sits in the water. So when I finally get hold of it, I can only really think to make the hull water tight and float it. Then try the little prop it has with an as yet unknown motor and see what happens.