I'm thinking of an engine for my 42% AW Yak 54. I know the DA 150 on pipes works good, and I'm sure the 170 is great. I haven't seen much about the Fox 200 though. I know somebody out there has had one, any feedback??
What feedback I've seen has been very good, however, there were some complaints about what might or might not be considered warranty repairs. Under the circumstances the repair required could have been deemed a bit dubious.
It's a good engine and it makes good power. That's about the best I can do for you.