Cheers everyone!
@CJ - Cheers for the heads up! The reason for the exhaust thing is that, from what I could see, this kit seemed to instruct me to not put an exhaust on with the 426.. There was only an exhaust for the 440, so I kinda did a butcher job of it but I didn't want to have no exhaust at all! I had the interior underside pointed out to me.. Bloody rookie mistake on my part there! I'll fix that air filter now too, thanks for the advice, it was kinda annoying me! As for the grille.. I made the choice between all flat black or this.. To be honest, I preferred this, but to each his own! Thanks for the post, the help is much appreciated!