I recently purchased a 1977 puch maxi sport high torque. It is in excellent original condition, the only thing missing is the HP sticker. I also found an old 1977 puch maxi sport for parts in the junkyard on our ranch. The parts one is just about identical and has the 2HP sticker, it is only a few hundred numbers apart on the serial #. So am I right to assume they are the same (both 2HP)? Thanks