Spartan air rifles on the cheap?

[crisancosmin19]

Hi!
Does anyone know of Spartan rifles look-alike's? I mean, a spartan is 1800. I would be happy with a, let's say, Disco action, into a special stock (one that covers the air tube, which would br shortened, naturally). The bolt would have to be different, too. Would it be possible? One for the custon tuners out there.
A real firearm lookalike, on air, relatively cheap. The closest I found would have to be the FX2000/Tarantula/Excaliber/Rapier family. Allso, the Air Arms Pro Sport (only gripe for me, I wish the barrel was longer).
Any input greatly appreciated.