ORIGINAL: tahustvedt
I say no.

Completely realistic sound like that is just about impossible on such a small model, but it's still possible to achieve something that "sounds" realistic, so to speak.
My Spitfire has an on-board sound system with Merlin sound recording that follows the throttle with different sounds for startup, idle, acceleration, high speed, retardation and shutdown. It sounds much better in real life but here are a couple of videos of it:
http://www.enrarot.net/videos/spitfire/spitfire06.wmv
http://www.enrarot.net/videos/spitfire/spitfire07.wmv
I have just installed new and better Griffon sounds that I made but haven't had a chance to test-fly with them yet because of the weather. some sound-system discussion here:
http://www.wattflyer.com/forums/showthread.php?t=573
Gotta love the P-51. I like it more than the Spitfire.
Pretty cool! Have you considered adding an oil tank and pump to create a few oil streaks on the fuselage?