The other day I purchased a Master Torque 42cc engine from rcextremepower.com. The price was a big selling point at $289. After ordering the engine, got it in 3 days, not bad. They test ran the engine for 15 minutes before shipping, ahhhh the sweet smell of gas when I opened the box. I haven't had a chance to bolt it up and run it and the more I got to looking, it had a familiar look. So I went to the Cermark to look at the SPE 40cc, and sure enough they look almost identical. Carb, muffler, back of the crankcase is different, and it came with an RCxel ignition. I have a zenoah g38 on a Goldberg Extra 330, fly's great, the weight difference between the zenoah and the Master Torque is unbelievable. When I got the box, I thought there was no way this could be the engine I ordered. Here are a few pics, there isn't a comparison photo of the SPE, but if you've seen one you'll see the similarities.