yes the head will protrude but not much i cut a square right up front on the cowl it gives it good cooling to,that way does not take away from the looks. I put the robart struts on mine give me a minute and i will post them for you. im going to look at rotating the engine a little bit to get it to clear. Im going to work on it tonight and i will post what i did and the results. I also have put a perry pump on mine it was about 30 dollars i think, people said they have had problems with the os 91 fx and air bubbles so i went ahead and got a pump.