ORIGINAL: Sarges_heroes2003
a .42 la should do well on the avistar, as I remember its a slightly smaller plane than the lt so the engine should pull it through the air nicely. this engine is not the performance line it is the economy line from a higher end brand.
What's a 42 LA?
Do you mean a TT 42 GP?
If so, that one is the equivalent of the OS 46 LA --- not that it matters, because he has a 40 LA already.