as far as i know ( maybe wrong ) masport never used a honda engine , the base is late 70's early 80's though and tough as nails !

so you have the best of both worlds now , . up the rear of base near the chute i think is some numbers , they tell you the year . too easy to id really mate .
if the wheels are good to go then just use the a%#e off of it as they are not worth much to most people , i never knew why though .. maybe i have a masport fetish blush

steel or plastic catcher ?

cheers Dave