I just had it done for $45.00. They had to cut the pipe and re weld it.
This place called Brakes, Air and mufflers next to Hooters on Hillsborough did it.
They also installed my x pipe on my C4 for $55.00 back before I sold it.
And just a few weeks ago the installed my x pipe for my C5 for $55.00 and that included the clamps.