While technically a Sport kit, matey, this rocket is a high performance beast!  Everythin' from t' parabolic shape o' t' nose cone t' t' tail cone seems designed t' maximize t' attitude you can get out o' a C11, me bucko, D12, or big E12 motor.  T' time spent t' airfoil t' fins and t' carve out t' tail cone for a perfect fit o' t' motor retainer (which requires some patience and a sharp hobby knife) is worth it when Sprint XL soars off t' launch pad!