Hi Guys. I am building an OMP Edge Hybrid single engine airplane from a kit and I want to convert it to a twin. I was hoping I could get a few questions answered.

1. I am planning to use 2 Evolution 26GT gasoline engines and I wanted to know how to reverse the prop direction of one of them.
2. Is it true that it is better to get the engines as close together as possible to minimize any unwanted characteristics?
3. Since the airplane has a single tail similar to that of an F7F Tigercat or a Pica Duellist, my question here is: will the rudder and elevator be as effective as it was when the plane was a single engine? Why did the P38 design call for a dual tail?

If I could get these questions answered guys it would be a tremendous help to getting my project done. I am new to twins so I need to learn.

Thank you in advance.

Regards,

Robert