I too have a Hog Bipe kit in the queue waiting to be built. Was thinking of putting a .90 4-stroke in it. Anyone know how this will affect the CG? Will the weight in the nose be too much and require adding weight to the tail or moving servos back there?

For 4 strokers I've got an OS .91 surpass or an Enya 90-4C, for 2 stroke I've got an OS .61FX, and a K&B .61 with Perry carb & pump. Any opinions on the best motor for this model? I'll be expecting to put it through its paces.