[QUOTE=arthurj;274788 if i can get a clip or if anyone knows if u can modifie existing one thx for all the info[/QUOTE]
Practically impossible to modify the existing magazine to feed .308
The "proper" 7.62 magazines can be expensive and not all that easy to find.
I would think that in the Ishapore 2A 7.62 magazine might be your best bet..
First two images show an Ishapore type magazine in a No4 L8 clone; the third shows the three most common types of 7.62 mags (Ishapore/Sterling/Enfield)