I am doing a 351w swap. I plan on using the convertable mounts that are already in the car for now. I will be using a victor intake and holley carb with no spacer. Will this fit under my 2" cowl or am I gonna have to have a bigger cowl. I have seen pictures of cars with this setup that look like the top of the "tall" valve covers sit flush with the top of the fenders and I have seen ones that look no different than a 5litre. Where is the dramatic difference in the motor height coming from? I found this picture on another mustang forum. though it looks bad aZZ, this is what I dont want to happen.