Ok, this is a slightly complex question.

1) I am committed to setting up a Phoenix Extra330S. I had actually bought it as a test bed for my 75ax but turns out the 75 is too small for 3D for that airplane. A collegue has the Phoenix Yak 60" which is essentially the same airplane and he is flying it with a 120AX quite nicely.
2) Now I want to avoid buying a 95AX right now.
3) I have a 120ax which was bought for a Funtana125. I dont intend to set up my Funtana for another year atleast (unless I crash something).
4) I could use the 120ax on the Extra and get a Dle20 for the Funtana, but the way the technology is evolving on gas engines, there may be something much better available by the time I decide to setup the Funtana.
5) Then again, I am not sure I should put a gasser on the Funtana which has a fragile build.
6) So far I have been only flying 60 size models (GP Reactor 46 that I just crashed but is repaired and Phoenix Topstar 60 which is same as H9 Frenzy /Twist60) and I am not sure I should make the jump to a 120 size engine so quickly

Given above description of my predicament, please suggest what should I do

(Administrators, please delete this post from the 3D flying section if the beginners' section is more appropriate)

Ameyam

This link might give you an answer to your ?? http://www.rcuniverse.com/forum/m_4798510/tm.htm , I know guys that fly the 120 on the Twist 60 and say it's perfect. I think it will be ok. just remember that it will be over powered.

throttle is not an on off switch.....better to have the power and not need it than to need the power and not have it....to a point....
I like gassers but there is a learning curve to gassers...based on that go with the 120 if the weight will allow it

I've seen this plane fly on a 1.20-AX and it works very well.

Images of my reinforcement on the airplane so far attached for Gray Beard and everyone. Some of the edges look badly cut, but they are due to the wood and quite OK, strengthened with epoxy everywhere