You know, the performace hit is an excellent question I have too and I wonder what the hard data is for it. As is, the B-26 fits the definition of gun boat about as equally well as an equally armed sand barge, when you take into consideration that a P-47 can be armed with 8 forward firing .50 cals. However, the B-26 is capable of carrying twice the ordnance and a multitude more of personel, so adding two gun pods to it shouldn't be any worse than if you forgot ot jetison a bomb or two. I wonder if it would have a signifigant or trivial impact to it if it were included.