So after some cleaning and whatnot, she is looking much much better.
Some things I did:
1. Took the tank off and gave it a clean inside and out.
2. Took the exhaust and manifold off and cleaned them. Also the white rubber hose thing connecting the exhaust to the manifold.
3. Cleaned between the cooling fins on the engine.
4. Removed the battery box and tidied up the wiring. Also tested both servo's. Working!

5. Cleaned the fuel lines from some built up gunk. Found a genius way to do this. Well, perhaps not new to anyone else? hahaha.
6. Blew out the chassis and parts with compressed air.
7. Washed the body.
I'll be ordering a new transmitter, hump pack and nitro fuel to get this puppy going.
P.S. This is a .21 Go engine. I see it's got a N4 glow plug in. Is this ok? Googling tells me this is a HSP N4 glow plug. I'm not sure. Any help would be appreciated. The guy I bought it from told me he always runs OS8 plugs. Well, not on this one. LOL!