SuperSonic:

Wrong answer.

Use two "AP Engines Motor Mount" from Hobby People, their number 211200, $2.49 each. This mount will accept the Norvel 0.049. It will also accept the AP Hornet 0.09 engine.

Fly it with the 0.049, don't like it you can then easily hang a pair of the AP 0.09 engines later.

Or sell me the kit. How much?

A twin unbuilt, wont land in a tilt.

Bill.