Title says it all; can anyone tell me of the major exterior visual differences between a late production B-17F and the B-17G?

I ask because I like the looks of "Tiger Girl", a "late B17F with the chin turret", on the Cutting Edge decal set CED48282, and am wondering what changes would have to be made to use this set on a Revell B-17G.

Thanks!

My references show that the difference is the G has a "chin turret" and "staggered waist gunner positions" both of which late production F's could have had The G was considered the last major modification of over 400 to the F.