Problem with rounded bolt on brake cylinder

[Lemming]

Sorry no pictures of this but my rear drums brake cylinder needs replacing on my 99 impreza 2.0 none turbo

 

The bolts holding on the cylinder have been turned into a perfect circle by previous owner and I can't really remove them till I know the replacement bolt size does anyone know a place I can get the exact same as what is being removed the local scrap yards don't have any subarus in so I can't get some from there either.

 

Any help would be thanked :)

[stants]

Have you tried subaru directly ? They'll have them or be able to get them for a couple of quid each, saves trying to find one being broken or ending up with old bolts,

Have a look here www.opposedforces.com for the part number

[Gambit]

Give Luke a ring at ICP I had to get a set of bolts for the Brake calipers on the front after I magically lost one :(

[Linx]

I bought some genuine Subaru front calliper bolts through eBay £6 per pair.