Hey All

I have a World Models 36% Katana.
I put a DA100 in it as this is what the previous owner had and what the plans called for.
The plane ended up at 33 lbs in lieu of the 28-30 lb listed weight.

I am curious if the 150 would be better for this weight.
It is balanced pretty good with the dual Btty system just aft the cg next to the pull pull servo for the rudder.
I am currently just a hair nose heavy.

Not sure if a DA150 will bolt up to where the 100 was w/no mods??
That is actuall my question. Can these 2 engines swap out with no major firewall mods???