Muffler Bracket Bolts

[Scrrem]

Just got my Corsa exhaust installed and discovered that my mufflers tip are pressing up againstthe bumper cover with only a few threads started on the muffler hanger bolts. The system I installed was pre-welded, so I don't have the luxury of loosening clamps and making the adjustment. I will need to get longer bolts and a spacer to give me proper clearance. I have heard other members say that there hanger bolts are really long. Was this hanger made with different length bolts? If nothing else guess I will need to fabricate a new bracket with longer bolts.
Rich