Hi Guys,
Sorry to hear about your troubles with RUCC. If I were you I would tell them to send you money and turn to the custom header manufacturers.
Sanderson Headers
www.sandersonheaders.com is one that comes from The Good Guys Calender or any of the Hot rod shops closer to you would probably work( Look for references form local custom builders). The real issue is for the fabricator to take measurements form your engine to your side pipes to ensure that the proper alignment of the pipes is maintained (Parallel to the body with sufficient clearance for heat dissipation) and you get the clearances around the foot boxes, steering shaft, starter, frame etc. set up correctly.
The Sanderson site gives you some idea of what to look for in a Special built custom header it is a very good web site.
It may be more money but, you will get a custom header built to your specific car. If you ceramic coat the header after they are built it becomes a one time deal and you are done. You may even try to get the specs from RUCC.
The other point is by putting the arm on RUCC for cash with an alternative in hand it may force the issue.
Leverage is only achieved with alternatives.
Best Regards,
Tony R.