Got these arms in a box of spares when i bought a series 1 and a mk3 cab so i presumed they were for one of these but they arent the same one is straight and one is cranked

The straight one:



The cranked one:



The pair see the difference:


The part Nos , not they will probably mean anything to anyone but the company who supplied them :



anybody got any ideas ??

Tried looking round ebay for some the same but no joy