I will definately agree a 2c inverted is a ROYAL pain in the A#%! That alone would make me pick a 4c for the plane if you have the money. The second one I built has a Saito 56 in it which I've flown a lot and it's a blast. However if you aren't looking to hover the plane the LA won't be lame AND it's only $65 whereas a 56 Saito is gonna cost ya $200 new. If the cowl is cut for the 2c muffler try it out, you have nothing to loose. Otherwise you might consider a 4c.