I decided to get back into control line after wandering into RC for a few years. I bought a Cox Hyper Viper just to get my chops back up. It actually doesn't fly too bad, but it needs a little more engine.

It appears to be a standard .049, and my question is this. I have a brand new Black Widow .049, which is supposed to be more powerful. In looking at the list of parts, it looks like the only difference in the two is the cylinder. Can I just swap cylinders to get more power.

Also, it came with a 5x3. Is that at good prop choice?

Thanks,
Jim