The TRX 3.3 is a very good engine lots of power in a .15 sized block and do not always believe the hp the ebgine manufacters advertise remeber that is their lively hood. Their job is to sell you engine even it meens doctoring the conditions, like how do you know when they say 1.5 hp they did not use 60% nitro and were running it at 300 degrees, you do not. I have seen a O.S. .18 tz offroad and a O.S. 18 cvr in a nitro evader and I would bet money that If you were to put a TRX 3.3 in your evader you will like it better. It has the perfect combination of power, torque, and rpm.