Used to do that all the time back in the day when just about every car, tank or airplane kit could be built in 2, 3, 4 or more ways.
Often times with a fighter, it would include parts to make it an escort fighter with drop tanks or ground attack (bombs & rockets). You'd end up building it with all available ordnance even though it probably wouldn't be able to get off the ground!
Most car kits came with the stock/street option, some sort of SS or super sport package and then a drag racing or stock car option. You'd stick all available engine exhaust stuff on or mix and match to your heart's desire.
I still remember building a P-38 kit that came with multiple options that made it a 2-man night fighter, 2-man droop snout bomber, ground attack with rockets, etc. and making it a 3-man night fighting, rocket equipped plane.