Just ordered the CALMINI set up for my 16V 4dr. I got the Stainless Steel header and and full exhaust. Just got to add a direct fit, full flow Cat for a full new set up.
If S/S is available, for the extra few $$$, why go with ceramic or, ugh!, chrome?
The only reason I would say Thorley, is the CARB cert. But I know a few guys running the 8V CALMINI header in CALI and use the Thorley CARB cert and no one knows the difference. CALMINI's head has the correct squared ports and flows better than the Thorley.