I'm thinking that the Protostar looks like it uses the same nosecone as the Sprint XL... If it does, I wonder if it has the same tail cone.... Also, if those decals were scaled up, I could see it being suitable for parting out to create an upscaled BiDent.
That sounds about right. I wonder how much weight is added to nose to counter weight of 3 plastic moldings, nosecones, on fins? But then, with that size motor and that it is rated for 1300 feet there is probably a certain range of additional nose weight which is pretty much, 'eh, whatever', in the motor's opinion.