It looks like nitroplanes bobcat, but its an all balsa arf, not a fiberglass fuselage

It has a scheam similar to the hobby lobby v diamond but it has 51" wingspan and the v diamond has 36" wingspan.

I'm looking for this model's name in order to find the COG, and to see if it needs a 46 engine or it can handle a 61 engine

Thanks for any input