Not exactly the answer your looking for but when I built one of those 1/12 scale Lindberg kits I replaced them with some resin ones. Bought them on ebay.
Thanks JC ! I guess if I tore out the front suspension I could just about make it work. Thanks to all for your help but I think it's time to give it up and admit things just wont fit. I will stick with the skinny 8 in the kit.
Maybe the AMT one ? I was just about to give up the idea because the Cobra compartment is so small and that front suspension as you know is sitting right there. I even just primed the stock skinny v8 but maybe my idea is not quite dead yet ! I know the one in the Cherry Bomb kit would work but it is little more than a lump and would need to build some panels around it which is no problem but I still would have the lump. I really thank you all for putting so much time and thought to the project.
Thank you so much fellows. It would seem the small compartment of the Cobra is not the best place to try and get in a turbine engine. Maybe not one of my better ideas. However since it is a fantasy car I could perhaps cut a section out of the middle and put it back together and make a smaller one. Hmmm. I would like to that you all once again.