I used Flat Allen Head bots with these finishing washers from Ebay seller Northenmoi
Stainless Steel M8 Turned Countersunk Finishing washers 5 Pack
I contacted the seller and he put up a 'buy it now' listing for 6 pcs
You can probably get the bolts from him too... (8M x 1.25 x 35mm ??)
http://www.ebay.com/itm/Stainless-St...item27e42df626
Further reading
http://www.camaro5.com/forums/showthread.php?t=283387