This is such a silly question, it feels like a troll.

The Titan is Lycoming you build yourself.
The Great Plains engine is a VW-based engine you build yourself.

The Titan has at least 3 times the continuous horsepower of the Great
Plains.

wrote:
I would like to buy a Great Plains Aircraft engine or Titan KitEngine -
your advice would be highly appreciated. Is it good value for money?
And why so cheap? ) If possible, give your comments (pros and
contras).
Thank you in advance,
Olga