I know this belongs elsewhere but I figure not many folks frequent the models site. I got this 1:24 model from Fairfield Collectables and was pretty impressed with its quality and detail for the money. They also carry a 1:18 Cobra model and I haven't any idea if it is comparable or not. They carry a wide range of stuff from not much more than junk to some quality scale models so you kind of have to be careful.
The underside has very good detail and working suspension pieces also.
Dan