I love my Ultima, but even though the price is stiff, it is rare to find a bunch of hopups. Even though it can dominate the competition if u back it up with a good driver, the price is a little high. The good engine to get would be a Fantom 12, just cut the shaft. You might want to get the slide carb version, but thats your choice. Next, pick an upper quality radio. I myself, dont like Futaba because they are too skinny for my longer hands. KO Propo and JR are very good radios to look into.