Why go the cheap route spend the extra 100 bucks a get you something worth wild. You have arguably the best built and most expensive car on the market why not put another 100 bucks in a good motor. Enough on that! But I will say you can get a OS vspec (blue cooling head) for about 270- 300. Orion has a great motor for the money and I've seen the Trinity first hand it looks pretty good but I wouldnt but one personally but it might suit your needs.