Hey pitpop, Im looking to buy my brother a new engine for his buggy for his birthday. He has the CRF ABI .21 5 port in his truggy now and LOVES it! So i want to stick with Orion and cant spend that kind of money for the crf abi..I was looking at the standard Alpha .21 3 port motor pipe combo, but here its got a crappy carb on it. how would if compary to the discovery motor? the only other motor he was interested in trying was the Precirotate D5 from ascendancy?? Whats the best i could get for around $250-260 with a pipe...