After some more tweaking and deleting of hidden and unnecessary faces I finally managed to finish my Low Poly Model... and that was without having to remodel any of the existing parts. I have no idea how but I also managed to only use a total of 489 polys. Yes, that's right 11 polys under the limit! I'm hoping that the basic appearance of this model will be improved once I've added the paintwork and textures... I promise the High Poly model will be much better. At least I hope it will be.
So here it is as it stands at 489 polys: