That's a Very early Steens " Burritto" . It's was made b/4 the Taco22 . Notice the bolt together frame .The upper frame was modular so it could be used for other models like the Tacquito and the "55" .Also notice the small tubes on the upper frame, They would have been either the engine mount for the Tacquitto or a swing arm mount for the "55". Those rims would have been correct as well .They are the early Tri-Stars B/4 Taco's had thier own style of rim . This is a Very Cool Find !:thumbsup: