Nice bike, albeit a little hanky-panked.
No front fender etc.
(what is it with you guys, why no front fender? You know a rock may shoot from the front tire and bang a hole in the sump?)
The bike pictured looks more like a vaguely modified enduro.
Spanish bikes (Bultaco, Elmeca, Montesa and Ossa) were known for their ruggedness and low compression ratio, which allowed for good low-down torque even from a small 2stroke single,
unlike Italian and Austrian enduros which were very high compression, high revving screamers)
Incidentally, these bikes also made for very interesting amateur clubman racers